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Finding the Fourth Proportional to 15,101.83, 20,841.22 and 8,387.48

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Solution

The fourth proportional to 15,101.83, 20,841.22 and 8,387.48 is: 11,575.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.83 : 20,841.22 = 8,387.48 : x
  2. Step 2: Convert to fraction form
    15,101.83/20,841.22 = 8,387.48/x
  3. Step 3: Cross multiply
    15,101.83x = 20,841.22 × 8,387.48
  4. Step 4: Simplify right side
    15,101.83x = 174,805,331.33
  5. Step 5: Solve for x
    x = 174,805,331.33/15,101.83
  6. Step 6: Final answer
    x = 11,575.11

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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.