Home / 31,723.57-43,780.78-18,112.23

Finding the Fourth Proportional to 31,723.57, 43,780.78 and 18,112.23

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Solution

The fourth proportional to 31,723.57, 43,780.78 and 18,112.23 is: 24,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,723.57 : 43,780.78 = 18,112.23 : x
  2. Step 2: Convert to fraction form
    31,723.57/43,780.78 = 18,112.23/x
  3. Step 3: Cross multiply
    31,723.57x = 43,780.78 × 18,112.23
  4. Step 4: Simplify right side
    31,723.57x = 792,967,651.77
  5. Step 5: Solve for x
    x = 792,967,651.77/31,723.57
  6. Step 6: Final answer
    x = 24,996.16

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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.