Home / 31,680.84-43,724.19-18,249.51

Finding the Fourth Proportional to 31,680.84, 43,724.19 and 18,249.51

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Solution

The fourth proportional to 31,680.84, 43,724.19 and 18,249.51 is: 25,186.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,680.84 : 43,724.19 = 18,249.51 : x
  2. Step 2: Convert to fraction form
    31,680.84/43,724.19 = 18,249.51/x
  3. Step 3: Cross multiply
    31,680.84x = 43,724.19 × 18,249.51
  4. Step 4: Simplify right side
    31,680.84x = 797,945,042.65
  5. Step 5: Solve for x
    x = 797,945,042.65/31,680.84
  6. Step 6: Final answer
    x = 25,186.99

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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.