Home / 27,867.20-38,456.21-15,767.55

Finding the Fourth Proportional to 27,867.20, 38,456.21 and 15,767.55

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Solution

The fourth proportional to 27,867.20, 38,456.21 and 15,767.55 is: 21,758.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,867.20 : 38,456.21 = 15,767.55 : x
  2. Step 2: Convert to fraction form
    27,867.20/38,456.21 = 15,767.55/x
  3. Step 3: Cross multiply
    27,867.20x = 38,456.21 × 15,767.55
  4. Step 4: Simplify right side
    27,867.20x = 606,360,135.15
  5. Step 5: Solve for x
    x = 606,360,135.15/27,867.20
  6. Step 6: Final answer
    x = 21,758.92

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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.