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Finding the Fourth Proportional to 15,059.54, 20,781.14 and 8,344.54

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Solution

The fourth proportional to 15,059.54, 20,781.14 and 8,344.54 is: 11,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.54 : 20,781.14 = 8,344.54 : x
  2. Step 2: Convert to fraction form
    15,059.54/20,781.14 = 8,344.54/x
  3. Step 3: Cross multiply
    15,059.54x = 20,781.14 × 8,344.54
  4. Step 4: Simplify right side
    15,059.54x = 173,409,053.98
  5. Step 5: Solve for x
    x = 173,409,053.98/15,059.54
  6. Step 6: Final answer
    x = 11,514.90

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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.