Home / 28,517.40-42,776.10-8,794.20

Finding the Fourth Proportional to 28,517.40, 42,776.10 and 8,794.20

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Solution

The fourth proportional to 28,517.40, 42,776.10 and 8,794.20 is: 13,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.40 : 42,776.10 = 8,794.20 : x
  2. Step 2: Convert to fraction form
    28,517.40/42,776.10 = 8,794.20/x
  3. Step 3: Cross multiply
    28,517.40x = 42,776.10 × 8,794.20
  4. Step 4: Simplify right side
    28,517.40x = 376,181,578.62
  5. Step 5: Solve for x
    x = 376,181,578.62/28,517.40
  6. Step 6: Final answer
    x = 13,191.30

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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.