Home / 28,517.30-42,780.80-8,792.18

Finding the Fourth Proportional to 28,517.30, 42,780.80 and 8,792.18

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Solution

The fourth proportional to 28,517.30, 42,780.80 and 8,792.18 is: 13,189.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.30 : 42,780.80 = 8,792.18 : x
  2. Step 2: Convert to fraction form
    28,517.30/42,780.80 = 8,792.18/x
  3. Step 3: Cross multiply
    28,517.30x = 42,780.80 × 8,792.18
  4. Step 4: Simplify right side
    28,517.30x = 376,136,280.24
  5. Step 5: Solve for x
    x = 376,136,280.24/28,517.30
  6. Step 6: Final answer
    x = 13,189.76

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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.