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Finding the Fourth Proportional to 12,456.17, 18,693.14 and 6,913.95

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Solution

The fourth proportional to 12,456.17, 18,693.14 and 6,913.95 is: 10,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.17 : 18,693.14 = 6,913.95 : x
  2. Step 2: Convert to fraction form
    12,456.17/18,693.14 = 6,913.95/x
  3. Step 3: Cross multiply
    12,456.17x = 18,693.14 × 6,913.95
  4. Step 4: Simplify right side
    12,456.17x = 129,243,452.59
  5. Step 5: Solve for x
    x = 129,243,452.59/12,456.17
  6. Step 6: Final answer
    x = 10,375.86

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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.