Home / 20,708.49-31,067.40-7,560.90

Finding the Fourth Proportional to 20,708.49, 31,067.40 and 7,560.90

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Solution

The fourth proportional to 20,708.49, 31,067.40 and 7,560.90 is: 11,343.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.49 : 31,067.40 = 7,560.90 : x
  2. Step 2: Convert to fraction form
    20,708.49/31,067.40 = 7,560.90/x
  3. Step 3: Cross multiply
    20,708.49x = 31,067.40 × 7,560.90
  4. Step 4: Simplify right side
    20,708.49x = 234,897,504.66
  5. Step 5: Solve for x
    x = 234,897,504.66/20,708.49
  6. Step 6: Final answer
    x = 11,343.05

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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.