Home / 20,035.65-30,049.38-12,654.53

Finding the Fourth Proportional to 20,035.65, 30,049.38 and 12,654.53

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Solution

The fourth proportional to 20,035.65, 30,049.38 and 12,654.53 is: 18,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,035.65 : 30,049.38 = 12,654.53 : x
  2. Step 2: Convert to fraction form
    20,035.65/30,049.38 = 12,654.53/x
  3. Step 3: Cross multiply
    20,035.65x = 30,049.38 × 12,654.53
  4. Step 4: Simplify right side
    20,035.65x = 380,260,743.13
  5. Step 5: Solve for x
    x = 380,260,743.13/20,035.65
  6. Step 6: Final answer
    x = 18,979.20

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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.