Home / 20,687.44-31,000.38-8,994.28

Finding the Fourth Proportional to 20,687.44, 31,000.38 and 8,994.28

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Solution

The fourth proportional to 20,687.44, 31,000.38 and 8,994.28 is: 13,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.44 : 31,000.38 = 8,994.28 : x
  2. Step 2: Convert to fraction form
    20,687.44/31,000.38 = 8,994.28/x
  3. Step 3: Cross multiply
    20,687.44x = 31,000.38 × 8,994.28
  4. Step 4: Simplify right side
    20,687.44x = 278,826,097.83
  5. Step 5: Solve for x
    x = 278,826,097.83/20,687.44
  6. Step 6: Final answer
    x = 13,478.04

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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.