Home / 27,779.14-38,335.30-15,203.90

Finding the Fourth Proportional to 27,779.14, 38,335.30 and 15,203.90

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Solution

The fourth proportional to 27,779.14, 38,335.30 and 15,203.90 is: 20,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.14 : 38,335.30 = 15,203.90 : x
  2. Step 2: Convert to fraction form
    27,779.14/38,335.30 = 15,203.90/x
  3. Step 3: Cross multiply
    27,779.14x = 38,335.30 × 15,203.90
  4. Step 4: Simplify right side
    27,779.14x = 582,846,067.67
  5. Step 5: Solve for x
    x = 582,846,067.67/27,779.14
  6. Step 6: Final answer
    x = 20,981.43

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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.