Home / 23,479.40-32,391.39-15,532.70

Finding the Fourth Proportional to 23,479.40, 32,391.39 and 15,532.70

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Solution

The fourth proportional to 23,479.40, 32,391.39 and 15,532.70 is: 21,428.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,479.40 : 32,391.39 = 15,532.70 : x
  2. Step 2: Convert to fraction form
    23,479.40/32,391.39 = 15,532.70/x
  3. Step 3: Cross multiply
    23,479.40x = 32,391.39 × 15,532.70
  4. Step 4: Simplify right side
    23,479.40x = 503,125,639.74
  5. Step 5: Solve for x
    x = 503,125,639.74/23,479.40
  6. Step 6: Final answer
    x = 21,428.38

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Find fourth proportional to 11,739.70, 16,195.70 and 7,766.35
Half scale
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Double scale
Find fourth proportional to 23,480.40, 32,392.77 and 15,533.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.