Home / 14,687.28-20,268.36-7,972.92

Finding the Fourth Proportional to 14,687.28, 20,268.36 and 7,972.92

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Solution

The fourth proportional to 14,687.28, 20,268.36 and 7,972.92 is: 11,002.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.28 : 20,268.36 = 7,972.92 : x
  2. Step 2: Convert to fraction form
    14,687.28/20,268.36 = 7,972.92/x
  3. Step 3: Cross multiply
    14,687.28x = 20,268.36 × 7,972.92
  4. Step 4: Simplify right side
    14,687.28x = 161,598,012.81
  5. Step 5: Solve for x
    x = 161,598,012.81/14,687.28
  6. Step 6: Final answer
    x = 11,002.58

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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.