Home / 31,788.87-43,876.61-18,367.92

Finding the Fourth Proportional to 31,788.87, 43,876.61 and 18,367.92

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Solution

The fourth proportional to 31,788.87, 43,876.61 and 18,367.92 is: 25,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,788.87 : 43,876.61 = 18,367.92 : x
  2. Step 2: Convert to fraction form
    31,788.87/43,876.61 = 18,367.92/x
  3. Step 3: Cross multiply
    31,788.87x = 43,876.61 × 18,367.92
  4. Step 4: Simplify right side
    31,788.87x = 805,921,970.51
  5. Step 5: Solve for x
    x = 805,921,970.51/31,788.87
  6. Step 6: Final answer
    x = 25,352.33

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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.