Home / 20,104.20-27,770.85-15,446.70

Finding the Fourth Proportional to 20,104.20, 27,770.85 and 15,446.70

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Solution

The fourth proportional to 20,104.20, 27,770.85 and 15,446.70 is: 21,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.20 : 27,770.85 = 15,446.70 : x
  2. Step 2: Convert to fraction form
    20,104.20/27,770.85 = 15,446.70/x
  3. Step 3: Cross multiply
    20,104.20x = 27,770.85 × 15,446.70
  4. Step 4: Simplify right side
    20,104.20x = 428,967,988.70
  5. Step 5: Solve for x
    x = 428,967,988.70/20,104.20
  6. Step 6: Final answer
    x = 21,337.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.