Home / 27,687.31-38,208.47-15,112.06

Finding the Fourth Proportional to 27,687.31, 38,208.47 and 15,112.06

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Solution

The fourth proportional to 27,687.31, 38,208.47 and 15,112.06 is: 20,854.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.31 : 38,208.47 = 15,112.06 : x
  2. Step 2: Convert to fraction form
    27,687.31/38,208.47 = 15,112.06/x
  3. Step 3: Cross multiply
    27,687.31x = 38,208.47 × 15,112.06
  4. Step 4: Simplify right side
    27,687.31x = 577,408,691.15
  5. Step 5: Solve for x
    x = 577,408,691.15/27,687.31
  6. Step 6: Final answer
    x = 20,854.63

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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.