Home / 20,380.72-30,572.70-8,694.04

Finding the Fourth Proportional to 20,380.72, 30,572.70 and 8,694.04

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Solution

The fourth proportional to 20,380.72, 30,572.70 and 8,694.04 is: 13,041.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.72 : 30,572.70 = 8,694.04 : x
  2. Step 2: Convert to fraction form
    20,380.72/30,572.70 = 8,694.04/x
  3. Step 3: Cross multiply
    20,380.72x = 30,572.70 × 8,694.04
  4. Step 4: Simplify right side
    20,380.72x = 265,800,276.71
  5. Step 5: Solve for x
    x = 265,800,276.71/20,380.72
  6. Step 6: Final answer
    x = 13,041.75

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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.