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Finding the Fourth Proportional to 20,284.20, 30,385.80 and 17,848.80

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Solution

The fourth proportional to 20,284.20, 30,385.80 and 17,848.80 is: 26,737.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.20 : 30,385.80 = 17,848.80 : x
  2. Step 2: Convert to fraction form
    20,284.20/30,385.80 = 17,848.80/x
  3. Step 3: Cross multiply
    20,284.20x = 30,385.80 × 17,848.80
  4. Step 4: Simplify right side
    20,284.20x = 542,350,067.04
  5. Step 5: Solve for x
    x = 542,350,067.04/20,284.20
  6. Step 6: Final answer
    x = 26,737.56

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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.