Home / 13,170.47-18,175.82-7,201.79

Finding the Fourth Proportional to 13,170.47, 18,175.82 and 7,201.79

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Solution

The fourth proportional to 13,170.47, 18,175.82 and 7,201.79 is: 9,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.47 : 18,175.82 = 7,201.79 : x
  2. Step 2: Convert to fraction form
    13,170.47/18,175.82 = 7,201.79/x
  3. Step 3: Cross multiply
    13,170.47x = 18,175.82 × 7,201.79
  4. Step 4: Simplify right side
    13,170.47x = 130,898,438.72
  5. Step 5: Solve for x
    x = 130,898,438.72/13,170.47
  6. Step 6: Final answer
    x = 9,938.78

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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.