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Finding the Fourth Proportional to 18,343.78, 25,314.52 and 9,960.28

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Solution

The fourth proportional to 18,343.78, 25,314.52 and 9,960.28 is: 13,745.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.78 : 25,314.52 = 9,960.28 : x
  2. Step 2: Convert to fraction form
    18,343.78/25,314.52 = 9,960.28/x
  3. Step 3: Cross multiply
    18,343.78x = 25,314.52 × 9,960.28
  4. Step 4: Simplify right side
    18,343.78x = 252,139,707.27
  5. Step 5: Solve for x
    x = 252,139,707.27/18,343.78
  6. Step 6: Final answer
    x = 13,745.24

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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.