Home / 27,691.56-38,215.50-15,756.96

Finding the Fourth Proportional to 27,691.56, 38,215.50 and 15,756.96

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Solution

The fourth proportional to 27,691.56, 38,215.50 and 15,756.96 is: 21,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,691.56 : 38,215.50 = 15,756.96 : x
  2. Step 2: Convert to fraction form
    27,691.56/38,215.50 = 15,756.96/x
  3. Step 3: Cross multiply
    27,691.56x = 38,215.50 × 15,756.96
  4. Step 4: Simplify right side
    27,691.56x = 602,160,104.88
  5. Step 5: Solve for x
    x = 602,160,104.88/27,691.56
  6. Step 6: Final answer
    x = 21,745.26

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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.