Home / 13,760.38-18,990.50-7,793.11

Finding the Fourth Proportional to 13,760.38, 18,990.50 and 7,793.11

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Solution

The fourth proportional to 13,760.38, 18,990.50 and 7,793.11 is: 10,755.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.38 : 18,990.50 = 7,793.11 : x
  2. Step 2: Convert to fraction form
    13,760.38/18,990.50 = 7,793.11/x
  3. Step 3: Cross multiply
    13,760.38x = 18,990.50 × 7,793.11
  4. Step 4: Simplify right side
    13,760.38x = 147,995,084.06
  5. Step 5: Solve for x
    x = 147,995,084.06/13,760.38
  6. Step 6: Final answer
    x = 10,755.16

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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.