Home / 15,505.76-21,397.95-8,432.17

Finding the Fourth Proportional to 15,505.76, 21,397.95 and 8,432.17

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Solution

The fourth proportional to 15,505.76, 21,397.95 and 8,432.17 is: 11,636.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.76 : 21,397.95 = 8,432.17 : x
  2. Step 2: Convert to fraction form
    15,505.76/21,397.95 = 8,432.17/x
  3. Step 3: Cross multiply
    15,505.76x = 21,397.95 × 8,432.17
  4. Step 4: Simplify right side
    15,505.76x = 180,431,098.56
  5. Step 5: Solve for x
    x = 180,431,098.56/15,505.76
  6. Step 6: Final answer
    x = 11,636.39

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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.