Home / 20,836.71-31,245.35-12,074.13

Finding the Fourth Proportional to 20,836.71, 31,245.35 and 12,074.13

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Solution

The fourth proportional to 20,836.71, 31,245.35 and 12,074.13 is: 18,105.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.71 : 31,245.35 = 12,074.13 : x
  2. Step 2: Convert to fraction form
    20,836.71/31,245.35 = 12,074.13/x
  3. Step 3: Cross multiply
    20,836.71x = 31,245.35 × 12,074.13
  4. Step 4: Simplify right side
    20,836.71x = 377,260,357.42
  5. Step 5: Solve for x
    x = 377,260,357.42/20,836.71
  6. Step 6: Final answer
    x = 18,105.56

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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.