Home / 15,535.28-21,440.40-9,565.76

Finding the Fourth Proportional to 15,535.28, 21,440.40 and 9,565.76

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Solution

The fourth proportional to 15,535.28, 21,440.40 and 9,565.76 is: 13,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.28 : 21,440.40 = 9,565.76 : x
  2. Step 2: Convert to fraction form
    15,535.28/21,440.40 = 9,565.76/x
  3. Step 3: Cross multiply
    15,535.28x = 21,440.40 × 9,565.76
  4. Step 4: Simplify right side
    15,535.28x = 205,093,720.70
  5. Step 5: Solve for x
    x = 205,093,720.70/15,535.28
  6. Step 6: Final answer
    x = 13,201.80

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Double scale
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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.