Home / 31,601.97-43,628.22-21,545.18

Finding the Fourth Proportional to 31,601.97, 43,628.22 and 21,545.18

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Solution

The fourth proportional to 31,601.97, 43,628.22 and 21,545.18 is: 29,744.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,601.97 : 43,628.22 = 21,545.18 : x
  2. Step 2: Convert to fraction form
    31,601.97/43,628.22 = 21,545.18/x
  3. Step 3: Cross multiply
    31,601.97x = 43,628.22 × 21,545.18
  4. Step 4: Simplify right side
    31,601.97x = 939,977,634.84
  5. Step 5: Solve for x
    x = 939,977,634.84/31,601.97
  6. Step 6: Final answer
    x = 29,744.27

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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.