Home / 28,778.87-39,713.77-16,031.75

Finding the Fourth Proportional to 28,778.87, 39,713.77 and 16,031.75

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Solution

The fourth proportional to 28,778.87, 39,713.77 and 16,031.75 is: 22,123.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.87 : 39,713.77 = 16,031.75 : x
  2. Step 2: Convert to fraction form
    28,778.87/39,713.77 = 16,031.75/x
  3. Step 3: Cross multiply
    28,778.87x = 39,713.77 × 16,031.75
  4. Step 4: Simplify right side
    28,778.87x = 636,681,232.20
  5. Step 5: Solve for x
    x = 636,681,232.20/28,778.87
  6. Step 6: Final answer
    x = 22,123.22

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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.