Home / 28,899.12-43,348.68-8,119.92

Finding the Fourth Proportional to 28,899.12, 43,348.68 and 8,119.92

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Solution

The fourth proportional to 28,899.12, 43,348.68 and 8,119.92 is: 12,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.12 : 43,348.68 = 8,119.92 : x
  2. Step 2: Convert to fraction form
    28,899.12/43,348.68 = 8,119.92/x
  3. Step 3: Cross multiply
    28,899.12x = 43,348.68 × 8,119.92
  4. Step 4: Simplify right side
    28,899.12x = 351,987,813.71
  5. Step 5: Solve for x
    x = 351,987,813.71/28,899.12
  6. Step 6: Final answer
    x = 12,179.88

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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.