Home / 20,689.38-31,026.51-7,537.86

Finding the Fourth Proportional to 20,689.38, 31,026.51 and 7,537.86

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Solution

The fourth proportional to 20,689.38, 31,026.51 and 7,537.86 is: 11,304.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.38 : 31,026.51 = 7,537.86 : x
  2. Step 2: Convert to fraction form
    20,689.38/31,026.51 = 7,537.86/x
  3. Step 3: Cross multiply
    20,689.38x = 31,026.51 × 7,537.86
  4. Step 4: Simplify right side
    20,689.38x = 233,873,488.67
  5. Step 5: Solve for x
    x = 233,873,488.67/20,689.38
  6. Step 6: Final answer
    x = 11,304.04

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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.