Home / 27,930.76-38,542.84-15,355.52

Finding the Fourth Proportional to 27,930.76, 38,542.84 and 15,355.52

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Solution

The fourth proportional to 27,930.76, 38,542.84 and 15,355.52 is: 21,189.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.76 : 38,542.84 = 15,355.52 : x
  2. Step 2: Convert to fraction form
    27,930.76/38,542.84 = 15,355.52/x
  3. Step 3: Cross multiply
    27,930.76x = 38,542.84 × 15,355.52
  4. Step 4: Simplify right side
    27,930.76x = 591,845,350.48
  5. Step 5: Solve for x
    x = 591,845,350.48/27,930.76
  6. Step 6: Final answer
    x = 21,189.73

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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.