Home / 14,687.28-20,268.12-7,972.68

Finding the Fourth Proportional to 14,687.28, 20,268.12 and 7,972.68

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Solution

The fourth proportional to 14,687.28, 20,268.12 and 7,972.68 is: 11,002.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.28 : 20,268.12 = 7,972.68 : x
  2. Step 2: Convert to fraction form
    14,687.28/20,268.12 = 7,972.68/x
  3. Step 3: Cross multiply
    14,687.28x = 20,268.12 × 7,972.68
  4. Step 4: Simplify right side
    14,687.28x = 161,591,234.96
  5. Step 5: Solve for x
    x = 161,591,234.96/14,687.28
  6. Step 6: Final answer
    x = 11,002.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.