Home / 38,112.48-57,185.12-18,405.78

Finding the Fourth Proportional to 38,112.48, 57,185.12 and 18,405.78

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Solution

The fourth proportional to 38,112.48, 57,185.12 and 18,405.78 is: 27,616.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,112.48 : 57,185.12 = 18,405.78 : x
  2. Step 2: Convert to fraction form
    38,112.48/57,185.12 = 18,405.78/x
  3. Step 3: Cross multiply
    38,112.48x = 57,185.12 × 18,405.78
  4. Step 4: Simplify right side
    38,112.48x = 1,052,536,737.99
  5. Step 5: Solve for x
    x = 1,052,536,737.99/38,112.48
  6. Step 6: Final answer
    x = 27,616.59

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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.