Home / 23,129.40-31,918.68-12,519.04

Finding the Fourth Proportional to 23,129.40, 31,918.68 and 12,519.04

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Solution

The fourth proportional to 23,129.40, 31,918.68 and 12,519.04 is: 17,276.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.40 : 31,918.68 = 12,519.04 : x
  2. Step 2: Convert to fraction form
    23,129.40/31,918.68 = 12,519.04/x
  3. Step 3: Cross multiply
    23,129.40x = 31,918.68 × 12,519.04
  4. Step 4: Simplify right side
    23,129.40x = 399,591,231.67
  5. Step 5: Solve for x
    x = 399,591,231.67/23,129.40
  6. Step 6: Final answer
    x = 17,276.33

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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.