Home / 12,087.52-16,680.56-6,781.92

Finding the Fourth Proportional to 12,087.52, 16,680.56 and 6,781.92

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Solution

The fourth proportional to 12,087.52, 16,680.56 and 6,781.92 is: 9,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.52 : 16,680.56 = 6,781.92 : x
  2. Step 2: Convert to fraction form
    12,087.52/16,680.56 = 6,781.92/x
  3. Step 3: Cross multiply
    12,087.52x = 16,680.56 × 6,781.92
  4. Step 4: Simplify right side
    12,087.52x = 113,126,223.48
  5. Step 5: Solve for x
    x = 113,126,223.48/12,087.52
  6. Step 6: Final answer
    x = 9,358.93

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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.