Home / 20,155.90-30,233.85-13,935.10

Finding the Fourth Proportional to 20,155.90, 30,233.85 and 13,935.10

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Solution

The fourth proportional to 20,155.90, 30,233.85 and 13,935.10 is: 20,902.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.90 : 30,233.85 = 13,935.10 : x
  2. Step 2: Convert to fraction form
    20,155.90/30,233.85 = 13,935.10/x
  3. Step 3: Cross multiply
    20,155.90x = 30,233.85 × 13,935.10
  4. Step 4: Simplify right side
    20,155.90x = 421,311,723.14
  5. Step 5: Solve for x
    x = 421,311,723.14/20,155.90
  6. Step 6: Final answer
    x = 20,902.65

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Similar ratio
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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.