Home / 20,862.13-31,297.28-9,175.31

Finding the Fourth Proportional to 20,862.13, 31,297.28 and 9,175.31

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Solution

The fourth proportional to 20,862.13, 31,297.28 and 9,175.31 is: 13,764.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.13 : 31,297.28 = 9,175.31 : x
  2. Step 2: Convert to fraction form
    20,862.13/31,297.28 = 9,175.31/x
  3. Step 3: Cross multiply
    20,862.13x = 31,297.28 × 9,175.31
  4. Step 4: Simplify right side
    20,862.13x = 287,162,246.16
  5. Step 5: Solve for x
    x = 287,162,246.16/20,862.13
  6. Step 6: Final answer
    x = 13,764.76

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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.