Home / 15,432.10-21,296.28-8,358.53

Finding the Fourth Proportional to 15,432.10, 21,296.28 and 8,358.53

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Solution

The fourth proportional to 15,432.10, 21,296.28 and 8,358.53 is: 11,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.10 : 21,296.28 = 8,358.53 : x
  2. Step 2: Convert to fraction form
    15,432.10/21,296.28 = 8,358.53/x
  3. Step 3: Cross multiply
    15,432.10x = 21,296.28 × 8,358.53
  4. Step 4: Simplify right side
    15,432.10x = 178,005,520.13
  5. Step 5: Solve for x
    x = 178,005,520.13/15,432.10
  6. Step 6: Final answer
    x = 11,534.75

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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.