Home / 20,499.60-30,725.76-9,974.88

Finding the Fourth Proportional to 20,499.60, 30,725.76 and 9,974.88

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Solution

The fourth proportional to 20,499.60, 30,725.76 and 9,974.88 is: 14,950.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.60 : 30,725.76 = 9,974.88 : x
  2. Step 2: Convert to fraction form
    20,499.60/30,725.76 = 9,974.88/x
  3. Step 3: Cross multiply
    20,499.60x = 30,725.76 × 9,974.88
  4. Step 4: Simplify right side
    20,499.60x = 306,485,768.91
  5. Step 5: Solve for x
    x = 306,485,768.91/20,499.60
  6. Step 6: Final answer
    x = 14,950.82

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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.