Home / 31,819.92-43,908.12-18,389.04

Finding the Fourth Proportional to 31,819.92, 43,908.12 and 18,389.04

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Solution

The fourth proportional to 31,819.92, 43,908.12 and 18,389.04 is: 25,374.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.92 : 43,908.12 = 18,389.04 : x
  2. Step 2: Convert to fraction form
    31,819.92/43,908.12 = 18,389.04/x
  3. Step 3: Cross multiply
    31,819.92x = 43,908.12 × 18,389.04
  4. Step 4: Simplify right side
    31,819.92x = 807,428,175.00
  5. Step 5: Solve for x
    x = 807,428,175.00/31,819.92
  6. Step 6: Final answer
    x = 25,374.93

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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.