Home / 28,179.60-42,238.89-18,325.95

Finding the Fourth Proportional to 28,179.60, 42,238.89 and 18,325.95

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Solution

The fourth proportional to 28,179.60, 42,238.89 and 18,325.95 is: 27,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.60 : 42,238.89 = 18,325.95 : x
  2. Step 2: Convert to fraction form
    28,179.60/42,238.89 = 18,325.95/x
  3. Step 3: Cross multiply
    28,179.60x = 42,238.89 × 18,325.95
  4. Step 4: Simplify right side
    28,179.60x = 774,067,786.20
  5. Step 5: Solve for x
    x = 774,067,786.20/28,179.60
  6. Step 6: Final answer
    x = 27,469.08

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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.