Home / 31,817.36-43,910.32-19,720.22

Finding the Fourth Proportional to 31,817.36, 43,910.32 and 19,720.22

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Solution

The fourth proportional to 31,817.36, 43,910.32 and 19,720.22 is: 27,215.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,817.36 : 43,910.32 = 19,720.22 : x
  2. Step 2: Convert to fraction form
    31,817.36/43,910.32 = 19,720.22/x
  3. Step 3: Cross multiply
    31,817.36x = 43,910.32 × 19,720.22
  4. Step 4: Simplify right side
    31,817.36x = 865,921,170.67
  5. Step 5: Solve for x
    x = 865,921,170.67/31,817.36
  6. Step 6: Final answer
    x = 27,215.37

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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.