Home / 15,344.13-21,175.67-8,631.87

Finding the Fourth Proportional to 15,344.13, 21,175.67 and 8,631.87

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Solution

The fourth proportional to 15,344.13, 21,175.67 and 8,631.87 is: 11,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.13 : 21,175.67 = 8,631.87 : x
  2. Step 2: Convert to fraction form
    15,344.13/21,175.67 = 8,631.87/x
  3. Step 3: Cross multiply
    15,344.13x = 21,175.67 × 8,631.87
  4. Step 4: Simplify right side
    15,344.13x = 182,785,587.44
  5. Step 5: Solve for x
    x = 182,785,587.44/15,344.13
  6. Step 6: Final answer
    x = 11,912.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.