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Finding the Fourth Proportional to 22,135.80, 33,158.90 and 13,790.20

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Solution

The fourth proportional to 22,135.80, 33,158.90 and 13,790.20 is: 20,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,135.80 : 33,158.90 = 13,790.20 : x
  2. Step 2: Convert to fraction form
    22,135.80/33,158.90 = 13,790.20/x
  3. Step 3: Cross multiply
    22,135.80x = 33,158.90 × 13,790.20
  4. Step 4: Simplify right side
    22,135.80x = 457,267,862.78
  5. Step 5: Solve for x
    x = 457,267,862.78/22,135.80
  6. Step 6: Final answer
    x = 20,657.39

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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.