Home / 15,532.40-21,434.95-8,458.81

Finding the Fourth Proportional to 15,532.40, 21,434.95 and 8,458.81

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Solution

The fourth proportional to 15,532.40, 21,434.95 and 8,458.81 is: 11,673.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,532.40 : 21,434.95 = 8,458.81 : x
  2. Step 2: Convert to fraction form
    15,532.40/21,434.95 = 8,458.81/x
  3. Step 3: Cross multiply
    15,532.40x = 21,434.95 × 8,458.81
  4. Step 4: Simplify right side
    15,532.40x = 181,314,169.41
  5. Step 5: Solve for x
    x = 181,314,169.41/15,532.40
  6. Step 6: Final answer
    x = 11,673.29

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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.