Home / 20,687.60-31,028.33-7,536.90

Finding the Fourth Proportional to 20,687.60, 31,028.33 and 7,536.90

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Solution

The fourth proportional to 20,687.60, 31,028.33 and 7,536.90 is: 11,304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.60 : 31,028.33 = 7,536.90 : x
  2. Step 2: Convert to fraction form
    20,687.60/31,028.33 = 7,536.90/x
  3. Step 3: Cross multiply
    20,687.60x = 31,028.33 × 7,536.90
  4. Step 4: Simplify right side
    20,687.60x = 233,857,420.38
  5. Step 5: Solve for x
    x = 233,857,420.38/20,687.60
  6. Step 6: Final answer
    x = 11,304.23

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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.