Home / 20,251.20-30,279.60-15,002.40

Finding the Fourth Proportional to 20,251.20, 30,279.60 and 15,002.40

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Solution

The fourth proportional to 20,251.20, 30,279.60 and 15,002.40 is: 22,431.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.20 : 30,279.60 = 15,002.40 : x
  2. Step 2: Convert to fraction form
    20,251.20/30,279.60 = 15,002.40/x
  3. Step 3: Cross multiply
    20,251.20x = 30,279.60 × 15,002.40
  4. Step 4: Simplify right side
    20,251.20x = 454,266,671.04
  5. Step 5: Solve for x
    x = 454,266,671.04/20,251.20
  6. Step 6: Final answer
    x = 22,431.59

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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.