Home / 20,170.10-30,251.10-9,640.10

Finding the Fourth Proportional to 20,170.10, 30,251.10 and 9,640.10

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Solution

The fourth proportional to 20,170.10, 30,251.10 and 9,640.10 is: 14,458.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.10 : 30,251.10 = 9,640.10 : x
  2. Step 2: Convert to fraction form
    20,170.10/30,251.10 = 9,640.10/x
  3. Step 3: Cross multiply
    20,170.10x = 30,251.10 × 9,640.10
  4. Step 4: Simplify right side
    20,170.10x = 291,623,629.11
  5. Step 5: Solve for x
    x = 291,623,629.11/20,170.10
  6. Step 6: Final answer
    x = 14,458.21

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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.