Home / 20,930.12-31,395.17-9,241.01

Finding the Fourth Proportional to 20,930.12, 31,395.17 and 9,241.01

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Solution

The fourth proportional to 20,930.12, 31,395.17 and 9,241.01 is: 13,861.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.12 : 31,395.17 = 9,241.01 : x
  2. Step 2: Convert to fraction form
    20,930.12/31,395.17 = 9,241.01/x
  3. Step 3: Cross multiply
    20,930.12x = 31,395.17 × 9,241.01
  4. Step 4: Simplify right side
    20,930.12x = 290,122,876.74
  5. Step 5: Solve for x
    x = 290,122,876.74/20,930.12
  6. Step 6: Final answer
    x = 13,861.50

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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.