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Finding the Fourth Proportional to 15,100.77, 20,839.33 and 8,294.74

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Solution

The fourth proportional to 15,100.77, 20,839.33 and 8,294.74 is: 11,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.77 : 20,839.33 = 8,294.74 : x
  2. Step 2: Convert to fraction form
    15,100.77/20,839.33 = 8,294.74/x
  3. Step 3: Cross multiply
    15,100.77x = 20,839.33 × 8,294.74
  4. Step 4: Simplify right side
    15,100.77x = 172,856,824.12
  5. Step 5: Solve for x
    x = 172,856,824.12/15,100.77
  6. Step 6: Final answer
    x = 11,446.89

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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.