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Finding the Fourth Proportional to 16,660.57, 24,978.51 and 10,085.20

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Solution

The fourth proportional to 16,660.57, 24,978.51 and 10,085.20 is: 15,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,660.57 : 24,978.51 = 10,085.20 : x
  2. Step 2: Convert to fraction form
    16,660.57/24,978.51 = 10,085.20/x
  3. Step 3: Cross multiply
    16,660.57x = 24,978.51 × 10,085.20
  4. Step 4: Simplify right side
    16,660.57x = 251,913,356.71
  5. Step 5: Solve for x
    x = 251,913,356.71/16,660.57
  6. Step 6: Final answer
    x = 15,120.33

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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.