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Finding the Fourth Proportional to 12,531.80, 17,292.80 and 7,227.02

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Solution

The fourth proportional to 12,531.80, 17,292.80 and 7,227.02 is: 9,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.80 : 17,292.80 = 7,227.02 : x
  2. Step 2: Convert to fraction form
    12,531.80/17,292.80 = 7,227.02/x
  3. Step 3: Cross multiply
    12,531.80x = 17,292.80 × 7,227.02
  4. Step 4: Simplify right side
    12,531.80x = 124,975,411.46
  5. Step 5: Solve for x
    x = 124,975,411.46/12,531.80
  6. Step 6: Final answer
    x = 9,972.66

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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.