Home / 20,278.45-30,417.22-9,177.10

Finding the Fourth Proportional to 20,278.45, 30,417.22 and 9,177.10

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Solution

The fourth proportional to 20,278.45, 30,417.22 and 9,177.10 is: 13,765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.45 : 30,417.22 = 9,177.10 : x
  2. Step 2: Convert to fraction form
    20,278.45/30,417.22 = 9,177.10/x
  3. Step 3: Cross multiply
    20,278.45x = 30,417.22 × 9,177.10
  4. Step 4: Simplify right side
    20,278.45x = 279,141,805.09
  5. Step 5: Solve for x
    x = 279,141,805.09/20,278.45
  6. Step 6: Final answer
    x = 13,765.44

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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.