Home / 28,291.47-39,042.25-15,545.47

Finding the Fourth Proportional to 28,291.47, 39,042.25 and 15,545.47

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Solution

The fourth proportional to 28,291.47, 39,042.25 and 15,545.47 is: 21,452.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.47 : 39,042.25 = 15,545.47 : x
  2. Step 2: Convert to fraction form
    28,291.47/39,042.25 = 15,545.47/x
  3. Step 3: Cross multiply
    28,291.47x = 39,042.25 × 15,545.47
  4. Step 4: Simplify right side
    28,291.47x = 606,930,126.11
  5. Step 5: Solve for x
    x = 606,930,126.11/28,291.47
  6. Step 6: Final answer
    x = 21,452.76

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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.