Home / 31,531.68-43,521.30-18,954

Finding the Fourth Proportional to 31,531.68, 43,521.30 and 18,954

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Solution

The fourth proportional to 31,531.68, 43,521.30 and 18,954 is: 26,161.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,531.68 : 43,521.30 = 18,954 : x
  2. Step 2: Convert to fraction form
    31,531.68/43,521.30 = 18,954/x
  3. Step 3: Cross multiply
    31,531.68x = 43,521.30 × 18,954
  4. Step 4: Simplify right side
    31,531.68x = 824,902,720.20
  5. Step 5: Solve for x
    x = 824,902,720.20/31,531.68
  6. Step 6: Final answer
    x = 26,161.08

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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.