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Finding the Fourth Proportional to 12,841.61, 17,721.25 and 7,535.43

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Solution

The fourth proportional to 12,841.61, 17,721.25 and 7,535.43 is: 10,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,841.61 : 17,721.25 = 7,535.43 : x
  2. Step 2: Convert to fraction form
    12,841.61/17,721.25 = 7,535.43/x
  3. Step 3: Cross multiply
    12,841.61x = 17,721.25 × 7,535.43
  4. Step 4: Simplify right side
    12,841.61x = 133,537,220.05
  5. Step 5: Solve for x
    x = 133,537,220.05/12,841.61
  6. Step 6: Final answer
    x = 10,398.80

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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.