Home / 27,531.72-38,006.28-20,818.44

Finding the Fourth Proportional to 27,531.72, 38,006.28 and 20,818.44

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Solution

The fourth proportional to 27,531.72, 38,006.28 and 20,818.44 is: 28,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,531.72 : 38,006.28 = 20,818.44 : x
  2. Step 2: Convert to fraction form
    27,531.72/38,006.28 = 20,818.44/x
  3. Step 3: Cross multiply
    27,531.72x = 38,006.28 × 20,818.44
  4. Step 4: Simplify right side
    27,531.72x = 791,231,459.80
  5. Step 5: Solve for x
    x = 791,231,459.80/27,531.72
  6. Step 6: Final answer
    x = 28,738.90

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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.