Home / 31,679.49-43,713.36-18,929.97

Finding the Fourth Proportional to 31,679.49, 43,713.36 and 18,929.97

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Solution

The fourth proportional to 31,679.49, 43,713.36 and 18,929.97 is: 26,120.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,679.49 : 43,713.36 = 18,929.97 : x
  2. Step 2: Convert to fraction form
    31,679.49/43,713.36 = 18,929.97/x
  3. Step 3: Cross multiply
    31,679.49x = 43,713.36 × 18,929.97
  4. Step 4: Simplify right side
    31,679.49x = 827,492,593.40
  5. Step 5: Solve for x
    x = 827,492,593.40/31,679.49
  6. Step 6: Final answer
    x = 26,120.77

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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.