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Finding the Fourth Proportional to 15,356.80, 23,035.20 and 10,691.20

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Solution

The fourth proportional to 15,356.80, 23,035.20 and 10,691.20 is: 16,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.80 : 23,035.20 = 10,691.20 : x
  2. Step 2: Convert to fraction form
    15,356.80/23,035.20 = 10,691.20/x
  3. Step 3: Cross multiply
    15,356.80x = 23,035.20 × 10,691.20
  4. Step 4: Simplify right side
    15,356.80x = 246,273,930.24
  5. Step 5: Solve for x
    x = 246,273,930.24/15,356.80
  6. Step 6: Final answer
    x = 16,036.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.