Home / 28,778.38-39,713.57-16,031.55

Finding the Fourth Proportional to 28,778.38, 39,713.57 and 16,031.55

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Solution

The fourth proportional to 28,778.38, 39,713.57 and 16,031.55 is: 22,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.38 : 39,713.57 = 16,031.55 : x
  2. Step 2: Convert to fraction form
    28,778.38/39,713.57 = 16,031.55/x
  3. Step 3: Cross multiply
    28,778.38x = 39,713.57 × 16,031.55
  4. Step 4: Simplify right side
    28,778.38x = 636,670,083.13
  5. Step 5: Solve for x
    x = 636,670,083.13/28,778.38
  6. Step 6: Final answer
    x = 22,123.21

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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.