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Finding the Fourth Proportional to 20,373.53, 30,545.81 and 7,883.02

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Solution

The fourth proportional to 20,373.53, 30,545.81 and 7,883.02 is: 11,818.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.53 : 30,545.81 = 7,883.02 : x
  2. Step 2: Convert to fraction form
    20,373.53/30,545.81 = 7,883.02/x
  3. Step 3: Cross multiply
    20,373.53x = 30,545.81 × 7,883.02
  4. Step 4: Simplify right side
    20,373.53x = 240,793,259.47
  5. Step 5: Solve for x
    x = 240,793,259.47/20,373.53
  6. Step 6: Final answer
    x = 11,818.93

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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.