Home / 31,869.09-43,979.40-17,721.96

Finding the Fourth Proportional to 31,869.09, 43,979.40 and 17,721.96

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Solution

The fourth proportional to 31,869.09, 43,979.40 and 17,721.96 is: 24,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,869.09 : 43,979.40 = 17,721.96 : x
  2. Step 2: Convert to fraction form
    31,869.09/43,979.40 = 17,721.96/x
  3. Step 3: Cross multiply
    31,869.09x = 43,979.40 × 17,721.96
  4. Step 4: Simplify right side
    31,869.09x = 779,401,167.62
  5. Step 5: Solve for x
    x = 779,401,167.62/31,869.09
  6. Step 6: Final answer
    x = 24,456.34

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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.