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Finding the Fourth Proportional to 12,471.29, 17,209.90 and 6,882.29

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Solution

The fourth proportional to 12,471.29, 17,209.90 and 6,882.29 is: 9,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.29 : 17,209.90 = 6,882.29 : x
  2. Step 2: Convert to fraction form
    12,471.29/17,209.90 = 6,882.29/x
  3. Step 3: Cross multiply
    12,471.29x = 17,209.90 × 6,882.29
  4. Step 4: Simplify right side
    12,471.29x = 118,443,522.67
  5. Step 5: Solve for x
    x = 118,443,522.67/12,471.29
  6. Step 6: Final answer
    x = 9,497.30

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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.