Home / 20,380.18-30,562.81-7,049.81

Finding the Fourth Proportional to 20,380.18, 30,562.81 and 7,049.81

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Solution

The fourth proportional to 20,380.18, 30,562.81 and 7,049.81 is: 10,572.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.18 : 30,562.81 = 7,049.81 : x
  2. Step 2: Convert to fraction form
    20,380.18/30,562.81 = 7,049.81/x
  3. Step 3: Cross multiply
    20,380.18x = 30,562.81 × 7,049.81
  4. Step 4: Simplify right side
    20,380.18x = 215,462,003.57
  5. Step 5: Solve for x
    x = 215,462,003.57/20,380.18
  6. Step 6: Final answer
    x = 10,572.13

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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.