Home / 40,884.20-61,311.90-18,708.20

Finding the Fourth Proportional to 40,884.20, 61,311.90 and 18,708.20

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Solution

The fourth proportional to 40,884.20, 61,311.90 and 18,708.20 is: 28,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,884.20 : 61,311.90 = 18,708.20 : x
  2. Step 2: Convert to fraction form
    40,884.20/61,311.90 = 18,708.20/x
  3. Step 3: Cross multiply
    40,884.20x = 61,311.90 × 18,708.20
  4. Step 4: Simplify right side
    40,884.20x = 1,147,035,287.58
  5. Step 5: Solve for x
    x = 1,147,035,287.58/40,884.20
  6. Step 6: Final answer
    x = 28,055.71

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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.