Home / 31,815.90-47,723.49-19,339.38

Finding the Fourth Proportional to 31,815.90, 47,723.49 and 19,339.38

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Solution

The fourth proportional to 31,815.90, 47,723.49 and 19,339.38 is: 29,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.90 : 47,723.49 = 19,339.38 : x
  2. Step 2: Convert to fraction form
    31,815.90/47,723.49 = 19,339.38/x
  3. Step 3: Cross multiply
    31,815.90x = 47,723.49 × 19,339.38
  4. Step 4: Simplify right side
    31,815.90x = 922,942,708.04
  5. Step 5: Solve for x
    x = 922,942,708.04/31,815.90
  6. Step 6: Final answer
    x = 29,008.85

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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.