Home / 28,517.80-42,776.70-16,822.75

Finding the Fourth Proportional to 28,517.80, 42,776.70 and 16,822.75

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Solution

The fourth proportional to 28,517.80, 42,776.70 and 16,822.75 is: 25,234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.80 : 42,776.70 = 16,822.75 : x
  2. Step 2: Convert to fraction form
    28,517.80/42,776.70 = 16,822.75/x
  3. Step 3: Cross multiply
    28,517.80x = 42,776.70 × 16,822.75
  4. Step 4: Simplify right side
    28,517.80x = 719,621,729.93
  5. Step 5: Solve for x
    x = 719,621,729.93/28,517.80
  6. Step 6: Final answer
    x = 25,234.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.