Home / 27,780.18-38,334.33-15,843.30

Finding the Fourth Proportional to 27,780.18, 38,334.33 and 15,843.30

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Solution

The fourth proportional to 27,780.18, 38,334.33 and 15,843.30 is: 21,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.18 : 38,334.33 = 15,843.30 : x
  2. Step 2: Convert to fraction form
    27,780.18/38,334.33 = 15,843.30/x
  3. Step 3: Cross multiply
    27,780.18x = 38,334.33 × 15,843.30
  4. Step 4: Simplify right side
    27,780.18x = 607,342,290.49
  5. Step 5: Solve for x
    x = 607,342,290.49/27,780.18
  6. Step 6: Final answer
    x = 21,862.43

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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.