Home / 20,717.10-31,074.84-8,236.62

Finding the Fourth Proportional to 20,717.10, 31,074.84 and 8,236.62

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Solution

The fourth proportional to 20,717.10, 31,074.84 and 8,236.62 is: 12,354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.10 : 31,074.84 = 8,236.62 : x
  2. Step 2: Convert to fraction form
    20,717.10/31,074.84 = 8,236.62/x
  3. Step 3: Cross multiply
    20,717.10x = 31,074.84 × 8,236.62
  4. Step 4: Simplify right side
    20,717.10x = 255,951,648.64
  5. Step 5: Solve for x
    x = 255,951,648.64/20,717.10
  6. Step 6: Final answer
    x = 12,354.61

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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.