Home / 12,456.19-18,684.35-3,691.18

Finding the Fourth Proportional to 12,456.19, 18,684.35 and 3,691.18

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Solution

The fourth proportional to 12,456.19, 18,684.35 and 3,691.18 is: 5,536.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.19 : 18,684.35 = 3,691.18 : x
  2. Step 2: Convert to fraction form
    12,456.19/18,684.35 = 3,691.18/x
  3. Step 3: Cross multiply
    12,456.19x = 18,684.35 × 3,691.18
  4. Step 4: Simplify right side
    12,456.19x = 68,967,187.16
  5. Step 5: Solve for x
    x = 68,967,187.16/12,456.19
  6. Step 6: Final answer
    x = 5,536.78

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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.