Home / 20,589.60-30,841.20-18,400.80

Finding the Fourth Proportional to 20,589.60, 30,841.20 and 18,400.80

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Solution

The fourth proportional to 20,589.60, 30,841.20 and 18,400.80 is: 27,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.60 : 30,841.20 = 18,400.80 : x
  2. Step 2: Convert to fraction form
    20,589.60/30,841.20 = 18,400.80/x
  3. Step 3: Cross multiply
    20,589.60x = 30,841.20 × 18,400.80
  4. Step 4: Simplify right side
    20,589.60x = 567,502,752.96
  5. Step 5: Solve for x
    x = 567,502,752.96/20,589.60
  6. Step 6: Final answer
    x = 27,562.59

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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.