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Finding the Fourth Proportional to 16,929.92, 25,404.48 and 9,138.56

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Solution

The fourth proportional to 16,929.92, 25,404.48 and 9,138.56 is: 13,713.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,929.92 : 25,404.48 = 9,138.56 : x
  2. Step 2: Convert to fraction form
    16,929.92/25,404.48 = 9,138.56/x
  3. Step 3: Cross multiply
    16,929.92x = 25,404.48 × 9,138.56
  4. Step 4: Simplify right side
    16,929.92x = 232,160,364.75
  5. Step 5: Solve for x
    x = 232,160,364.75/16,929.92
  6. Step 6: Final answer
    x = 13,713.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.