Home / 20,442.20-30,622.80-18,006.80

Finding the Fourth Proportional to 20,442.20, 30,622.80 and 18,006.80

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Solution

The fourth proportional to 20,442.20, 30,622.80 and 18,006.80 is: 26,974.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.20 : 30,622.80 = 18,006.80 : x
  2. Step 2: Convert to fraction form
    20,442.20/30,622.80 = 18,006.80/x
  3. Step 3: Cross multiply
    20,442.20x = 30,622.80 × 18,006.80
  4. Step 4: Simplify right side
    20,442.20x = 551,418,635.04
  5. Step 5: Solve for x
    x = 551,418,635.04/20,442.20
  6. Step 6: Final answer
    x = 26,974.53

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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.