Home / 20,125.28-27,773.60-11,172.92

Finding the Fourth Proportional to 20,125.28, 27,773.60 and 11,172.92

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Solution

The fourth proportional to 20,125.28, 27,773.60 and 11,172.92 is: 15,419.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.28 : 27,773.60 = 11,172.92 : x
  2. Step 2: Convert to fraction form
    20,125.28/27,773.60 = 11,172.92/x
  3. Step 3: Cross multiply
    20,125.28x = 27,773.60 × 11,172.92
  4. Step 4: Simplify right side
    20,125.28x = 310,312,016.18
  5. Step 5: Solve for x
    x = 310,312,016.18/20,125.28
  6. Step 6: Final answer
    x = 15,419.02

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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.