Home / 20,948.46-31,419.10-6,908.64

Finding the Fourth Proportional to 20,948.46, 31,419.10 and 6,908.64

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Solution

The fourth proportional to 20,948.46, 31,419.10 and 6,908.64 is: 10,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.46 : 31,419.10 = 6,908.64 : x
  2. Step 2: Convert to fraction form
    20,948.46/31,419.10 = 6,908.64/x
  3. Step 3: Cross multiply
    20,948.46x = 31,419.10 × 6,908.64
  4. Step 4: Simplify right side
    20,948.46x = 217,063,251.02
  5. Step 5: Solve for x
    x = 217,063,251.02/20,948.46
  6. Step 6: Final answer
    x = 10,361.78

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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.