Home / 14,731.92-20,314.80-11,375.28

Finding the Fourth Proportional to 14,731.92, 20,314.80 and 11,375.28

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Solution

The fourth proportional to 14,731.92, 20,314.80 and 11,375.28 is: 15,686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,731.92 : 20,314.80 = 11,375.28 : x
  2. Step 2: Convert to fraction form
    14,731.92/20,314.80 = 11,375.28/x
  3. Step 3: Cross multiply
    14,731.92x = 20,314.80 × 11,375.28
  4. Step 4: Simplify right side
    14,731.92x = 231,086,538.14
  5. Step 5: Solve for x
    x = 231,086,538.14/14,731.92
  6. Step 6: Final answer
    x = 15,686.11

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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.