Home / 43,902.28-65,868.21-13,921.42

Finding the Fourth Proportional to 43,902.28, 65,868.21 and 13,921.42

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Solution

The fourth proportional to 43,902.28, 65,868.21 and 13,921.42 is: 20,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,902.28 : 65,868.21 = 13,921.42 : x
  2. Step 2: Convert to fraction form
    43,902.28/65,868.21 = 13,921.42/x
  3. Step 3: Cross multiply
    43,902.28x = 65,868.21 × 13,921.42
  4. Step 4: Simplify right side
    43,902.28x = 916,979,016.06
  5. Step 5: Solve for x
    x = 916,979,016.06/43,902.28
  6. Step 6: Final answer
    x = 20,886.82

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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.