Home / 28,789.80-39,732.35-16,216.98

Finding the Fourth Proportional to 28,789.80, 39,732.35 and 16,216.98

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Solution

The fourth proportional to 28,789.80, 39,732.35 and 16,216.98 is: 22,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,789.80 : 39,732.35 = 16,216.98 : x
  2. Step 2: Convert to fraction form
    28,789.80/39,732.35 = 16,216.98/x
  3. Step 3: Cross multiply
    28,789.80x = 39,732.35 × 16,216.98
  4. Step 4: Simplify right side
    28,789.80x = 644,338,725.30
  5. Step 5: Solve for x
    x = 644,338,725.30/28,789.80
  6. Step 6: Final answer
    x = 22,380.80

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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.