Home / 18,306.38-25,253.06-11,138.48

Finding the Fourth Proportional to 18,306.38, 25,253.06 and 11,138.48

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Solution

The fourth proportional to 18,306.38, 25,253.06 and 11,138.48 is: 15,365.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.38 : 25,253.06 = 11,138.48 : x
  2. Step 2: Convert to fraction form
    18,306.38/25,253.06 = 11,138.48/x
  3. Step 3: Cross multiply
    18,306.38x = 25,253.06 × 11,138.48
  4. Step 4: Simplify right side
    18,306.38x = 281,280,703.75
  5. Step 5: Solve for x
    x = 281,280,703.75/18,306.38
  6. Step 6: Final answer
    x = 15,365.17

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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.