Home / 31,890.49-44,006.19-18,791.40

Finding the Fourth Proportional to 31,890.49, 44,006.19 and 18,791.40

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Solution

The fourth proportional to 31,890.49, 44,006.19 and 18,791.40 is: 25,930.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.49 : 44,006.19 = 18,791.40 : x
  2. Step 2: Convert to fraction form
    31,890.49/44,006.19 = 18,791.40/x
  3. Step 3: Cross multiply
    31,890.49x = 44,006.19 × 18,791.40
  4. Step 4: Simplify right side
    31,890.49x = 826,937,903.31
  5. Step 5: Solve for x
    x = 826,937,903.31/31,890.49
  6. Step 6: Final answer
    x = 25,930.55

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1.5x scale

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.