Home / 18,306.78-27,474.75-7,218.69

Finding the Fourth Proportional to 18,306.78, 27,474.75 and 7,218.69

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Solution

The fourth proportional to 18,306.78, 27,474.75 and 7,218.69 is: 10,833.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.78 : 27,474.75 = 7,218.69 : x
  2. Step 2: Convert to fraction form
    18,306.78/27,474.75 = 7,218.69/x
  3. Step 3: Cross multiply
    18,306.78x = 27,474.75 × 7,218.69
  4. Step 4: Simplify right side
    18,306.78x = 198,331,703.08
  5. Step 5: Solve for x
    x = 198,331,703.08/18,306.78
  6. Step 6: Final answer
    x = 10,833.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.