Home / 28,678.20-43,025.49-8,957.04

Finding the Fourth Proportional to 28,678.20, 43,025.49 and 8,957.04

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Solution

The fourth proportional to 28,678.20, 43,025.49 and 8,957.04 is: 13,438.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.20 : 43,025.49 = 8,957.04 : x
  2. Step 2: Convert to fraction form
    28,678.20/43,025.49 = 8,957.04/x
  3. Step 3: Cross multiply
    28,678.20x = 43,025.49 × 8,957.04
  4. Step 4: Simplify right side
    28,678.20x = 385,381,034.95
  5. Step 5: Solve for x
    x = 385,381,034.95/28,678.20
  6. Step 6: Final answer
    x = 13,438.12

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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.