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Finding the Fourth Proportional to 12,731.41, 17,568.97 and 7,425.87

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Solution

The fourth proportional to 12,731.41, 17,568.97 and 7,425.87 is: 10,247.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.41 : 17,568.97 = 7,425.87 : x
  2. Step 2: Convert to fraction form
    12,731.41/17,568.97 = 7,425.87/x
  3. Step 3: Cross multiply
    12,731.41x = 17,568.97 × 7,425.87
  4. Step 4: Simplify right side
    12,731.41x = 130,464,887.25
  5. Step 5: Solve for x
    x = 130,464,887.25/12,731.41
  6. Step 6: Final answer
    x = 10,247.48

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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.