Home / 15,505.52-21,397.56-8,432.24

Finding the Fourth Proportional to 15,505.52, 21,397.56 and 8,432.24

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Solution

The fourth proportional to 15,505.52, 21,397.56 and 8,432.24 is: 11,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.52 : 21,397.56 = 8,432.24 : x
  2. Step 2: Convert to fraction form
    15,505.52/21,397.56 = 8,432.24/x
  3. Step 3: Cross multiply
    15,505.52x = 21,397.56 × 8,432.24
  4. Step 4: Simplify right side
    15,505.52x = 180,429,361.33
  5. Step 5: Solve for x
    x = 180,429,361.33/15,505.52
  6. Step 6: Final answer
    x = 11,636.46

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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.