Home / 12,456.30-18,684.50-3,691.28

Finding the Fourth Proportional to 12,456.30, 18,684.50 and 3,691.28

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Solution

The fourth proportional to 12,456.30, 18,684.50 and 3,691.28 is: 5,536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.30 : 18,684.50 = 3,691.28 : x
  2. Step 2: Convert to fraction form
    12,456.30/18,684.50 = 3,691.28/x
  3. Step 3: Cross multiply
    12,456.30x = 18,684.50 × 3,691.28
  4. Step 4: Simplify right side
    12,456.30x = 68,969,721.16
  5. Step 5: Solve for x
    x = 68,969,721.16/12,456.30
  6. Step 6: Final answer
    x = 5,536.93

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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.