Home / 18,945.38-28,422.17-7,258.59

Finding the Fourth Proportional to 18,945.38, 28,422.17 and 7,258.59

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Solution

The fourth proportional to 18,945.38, 28,422.17 and 7,258.59 is: 10,889.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.38 : 28,422.17 = 7,258.59 : x
  2. Step 2: Convert to fraction form
    18,945.38/28,422.17 = 7,258.59/x
  3. Step 3: Cross multiply
    18,945.38x = 28,422.17 × 7,258.59
  4. Step 4: Simplify right side
    18,945.38x = 206,304,842.65
  5. Step 5: Solve for x
    x = 206,304,842.65/18,945.38
  6. Step 6: Final answer
    x = 10,889.46

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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.