Home / 18,344.28-25,315.20-9,960.78

Finding the Fourth Proportional to 18,344.28, 25,315.20 and 9,960.78

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Solution

The fourth proportional to 18,344.28, 25,315.20 and 9,960.78 is: 13,745.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,344.28 : 25,315.20 = 9,960.78 : x
  2. Step 2: Convert to fraction form
    18,344.28/25,315.20 = 9,960.78/x
  3. Step 3: Cross multiply
    18,344.28x = 25,315.20 × 9,960.78
  4. Step 4: Simplify right side
    18,344.28x = 252,159,137.86
  5. Step 5: Solve for x
    x = 252,159,137.86/18,344.28
  6. Step 6: Final answer
    x = 13,745.93

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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.