Home / 31,125.45-42,951.84-18,382.73

Finding the Fourth Proportional to 31,125.45, 42,951.84 and 18,382.73

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Solution

The fourth proportional to 31,125.45, 42,951.84 and 18,382.73 is: 25,367.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,125.45 : 42,951.84 = 18,382.73 : x
  2. Step 2: Convert to fraction form
    31,125.45/42,951.84 = 18,382.73/x
  3. Step 3: Cross multiply
    31,125.45x = 42,951.84 × 18,382.73
  4. Step 4: Simplify right side
    31,125.45x = 789,572,024.03
  5. Step 5: Solve for x
    x = 789,572,024.03/31,125.45
  6. Step 6: Final answer
    x = 25,367.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.