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Finding the Fourth Proportional to 15,841.56, 21,862.98 and 9,127.44

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Solution

The fourth proportional to 15,841.56, 21,862.98 and 9,127.44 is: 12,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.56 : 21,862.98 = 9,127.44 : x
  2. Step 2: Convert to fraction form
    15,841.56/21,862.98 = 9,127.44/x
  3. Step 3: Cross multiply
    15,841.56x = 21,862.98 × 9,127.44
  4. Step 4: Simplify right side
    15,841.56x = 199,553,038.17
  5. Step 5: Solve for x
    x = 199,553,038.17/15,841.56
  6. Step 6: Final answer
    x = 12,596.80

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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.