Home / 31,874.20-47,795.10-18,730.60

Finding the Fourth Proportional to 31,874.20, 47,795.10 and 18,730.60

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Solution

The fourth proportional to 31,874.20, 47,795.10 and 18,730.60 is: 28,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,874.20 : 47,795.10 = 18,730.60 : x
  2. Step 2: Convert to fraction form
    31,874.20/47,795.10 = 18,730.60/x
  3. Step 3: Cross multiply
    31,874.20x = 47,795.10 × 18,730.60
  4. Step 4: Simplify right side
    31,874.20x = 895,230,900.06
  5. Step 5: Solve for x
    x = 895,230,900.06/31,874.20
  6. Step 6: Final answer
    x = 28,086.38

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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.