Home / 12,419.12-18,628.68-3,654.11

Finding the Fourth Proportional to 12,419.12, 18,628.68 and 3,654.11

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Solution

The fourth proportional to 12,419.12, 18,628.68 and 3,654.11 is: 5,481.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.12 : 18,628.68 = 3,654.11 : x
  2. Step 2: Convert to fraction form
    12,419.12/18,628.68 = 3,654.11/x
  3. Step 3: Cross multiply
    12,419.12x = 18,628.68 × 3,654.11
  4. Step 4: Simplify right side
    12,419.12x = 68,071,306.15
  5. Step 5: Solve for x
    x = 68,071,306.15/12,419.12
  6. Step 6: Final answer
    x = 5,481.17

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Similar ratio
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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.