Home / 27,930.78-38,545.13-15,184.69

Finding the Fourth Proportional to 27,930.78, 38,545.13 and 15,184.69

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Solution

The fourth proportional to 27,930.78, 38,545.13 and 15,184.69 is: 20,955.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.78 : 38,545.13 = 15,184.69 : x
  2. Step 2: Convert to fraction form
    27,930.78/38,545.13 = 15,184.69/x
  3. Step 3: Cross multiply
    27,930.78x = 38,545.13 × 15,184.69
  4. Step 4: Simplify right side
    27,930.78x = 585,295,791.66
  5. Step 5: Solve for x
    x = 585,295,791.66/27,930.78
  6. Step 6: Final answer
    x = 20,955.23

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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.