Home / 31,819.84-43,908.81-18,391.97

Finding the Fourth Proportional to 31,819.84, 43,908.81 and 18,391.97

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Solution

The fourth proportional to 31,819.84, 43,908.81 and 18,391.97 is: 25,379.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.84 : 43,908.81 = 18,391.97 : x
  2. Step 2: Convert to fraction form
    31,819.84/43,908.81 = 18,391.97/x
  3. Step 3: Cross multiply
    31,819.84x = 43,908.81 × 18,391.97
  4. Step 4: Simplify right side
    31,819.84x = 807,569,296.71
  5. Step 5: Solve for x
    x = 807,569,296.71/31,819.84
  6. Step 6: Final answer
    x = 25,379.43

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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.