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Finding the Fourth Proportional to 18,343.88, 25,314.36 and 9,960.38

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Solution

The fourth proportional to 18,343.88, 25,314.36 and 9,960.38 is: 13,745.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.88 : 25,314.36 = 9,960.38 : x
  2. Step 2: Convert to fraction form
    18,343.88/25,314.36 = 9,960.38/x
  3. Step 3: Cross multiply
    18,343.88x = 25,314.36 × 9,960.38
  4. Step 4: Simplify right side
    18,343.88x = 252,140,645.06
  5. Step 5: Solve for x
    x = 252,140,645.06/18,343.88
  6. Step 6: Final answer
    x = 13,745.22

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Similar ratio
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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.