Home / 20,170.60-30,251.85-9,640.60

Finding the Fourth Proportional to 20,170.60, 30,251.85 and 9,640.60

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Solution

The fourth proportional to 20,170.60, 30,251.85 and 9,640.60 is: 14,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.60 : 30,251.85 = 9,640.60 : x
  2. Step 2: Convert to fraction form
    20,170.60/30,251.85 = 9,640.60/x
  3. Step 3: Cross multiply
    20,170.60x = 30,251.85 × 9,640.60
  4. Step 4: Simplify right side
    20,170.60x = 291,645,985.11
  5. Step 5: Solve for x
    x = 291,645,985.11/20,170.60
  6. Step 6: Final answer
    x = 14,458.96

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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.