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Finding the Fourth Proportional to 20,151.80, 30,227.70 and 19,892.60

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Solution

The fourth proportional to 20,151.80, 30,227.70 and 19,892.60 is: 29,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.80 : 30,227.70 = 19,892.60 : x
  2. Step 2: Convert to fraction form
    20,151.80/30,227.70 = 19,892.60/x
  3. Step 3: Cross multiply
    20,151.80x = 30,227.70 × 19,892.60
  4. Step 4: Simplify right side
    20,151.80x = 601,307,545.02
  5. Step 5: Solve for x
    x = 601,307,545.02/20,151.80
  6. Step 6: Final answer
    x = 29,838.90

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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.