Home / 28,115.88-42,179.58-8,395.56

Finding the Fourth Proportional to 28,115.88, 42,179.58 and 8,395.56

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Solution

The fourth proportional to 28,115.88, 42,179.58 and 8,395.56 is: 12,595.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.88 : 42,179.58 = 8,395.56 : x
  2. Step 2: Convert to fraction form
    28,115.88/42,179.58 = 8,395.56/x
  3. Step 3: Cross multiply
    28,115.88x = 42,179.58 × 8,395.56
  4. Step 4: Simplify right side
    28,115.88x = 354,121,194.66
  5. Step 5: Solve for x
    x = 354,121,194.66/28,115.88
  6. Step 6: Final answer
    x = 12,595.06

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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.