Home / 20,862.14-31,297.28-9,175.32

Finding the Fourth Proportional to 20,862.14, 31,297.28 and 9,175.32

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Solution

The fourth proportional to 20,862.14, 31,297.28 and 9,175.32 is: 13,764.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.14 : 31,297.28 = 9,175.32 : x
  2. Step 2: Convert to fraction form
    20,862.14/31,297.28 = 9,175.32/x
  3. Step 3: Cross multiply
    20,862.14x = 31,297.28 × 9,175.32
  4. Step 4: Simplify right side
    20,862.14x = 287,162,559.13
  5. Step 5: Solve for x
    x = 287,162,559.13/20,862.14
  6. Step 6: Final answer
    x = 13,764.77

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1.5x scale

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.