Home / 71,028.38-106,542.77-18,438.32

Finding the Fourth Proportional to 71,028.38, 106,542.77 and 18,438.32

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Solution

The fourth proportional to 71,028.38, 106,542.77 and 18,438.32 is: 27,657.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,028.38 : 106,542.77 = 18,438.32 : x
  2. Step 2: Convert to fraction form
    71,028.38/106,542.77 = 18,438.32/x
  3. Step 3: Cross multiply
    71,028.38x = 106,542.77 × 18,438.32
  4. Step 4: Simplify right side
    71,028.38x = 1,964,469,686.95
  5. Step 5: Solve for x
    x = 1,964,469,686.95/71,028.38
  6. Step 6: Final answer
    x = 27,657.53

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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.