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Finding the Fourth Proportional to 16,807.97, 25,211.96 and 5,121.20

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Solution

The fourth proportional to 16,807.97, 25,211.96 and 5,121.20 is: 7,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,807.97 : 25,211.96 = 5,121.20 : x
  2. Step 2: Convert to fraction form
    16,807.97/25,211.96 = 5,121.20/x
  3. Step 3: Cross multiply
    16,807.97x = 25,211.96 × 5,121.20
  4. Step 4: Simplify right side
    16,807.97x = 129,115,337.89
  5. Step 5: Solve for x
    x = 129,115,337.89/16,807.97
  6. Step 6: Final answer
    x = 7,681.79

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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.