Home / 15,423.78-21,284.87-8,350.23

Finding the Fourth Proportional to 15,423.78, 21,284.87 and 8,350.23

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Solution

The fourth proportional to 15,423.78, 21,284.87 and 8,350.23 is: 11,523.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.78 : 21,284.87 = 8,350.23 : x
  2. Step 2: Convert to fraction form
    15,423.78/21,284.87 = 8,350.23/x
  3. Step 3: Cross multiply
    15,423.78x = 21,284.87 × 8,350.23
  4. Step 4: Simplify right side
    15,423.78x = 177,733,518.27
  5. Step 5: Solve for x
    x = 177,733,518.27/15,423.78
  6. Step 6: Final answer
    x = 11,523.34

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Double scale
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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.