Home / 31,367.87-47,044.62-18,721.19

Finding the Fourth Proportional to 31,367.87, 47,044.62 and 18,721.19

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Solution

The fourth proportional to 31,367.87, 47,044.62 and 18,721.19 is: 28,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,367.87 : 47,044.62 = 18,721.19 : x
  2. Step 2: Convert to fraction form
    31,367.87/47,044.62 = 18,721.19/x
  3. Step 3: Cross multiply
    31,367.87x = 47,044.62 × 18,721.19
  4. Step 4: Simplify right side
    31,367.87x = 880,731,387.11
  5. Step 5: Solve for x
    x = 880,731,387.11/31,367.87
  6. Step 6: Final answer
    x = 28,077.51

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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.