Home / 21,259.62-31,891.05-6,469.80

Finding the Fourth Proportional to 21,259.62, 31,891.05 and 6,469.80

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Solution

The fourth proportional to 21,259.62, 31,891.05 and 6,469.80 is: 9,705.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.62 : 31,891.05 = 6,469.80 : x
  2. Step 2: Convert to fraction form
    21,259.62/31,891.05 = 6,469.80/x
  3. Step 3: Cross multiply
    21,259.62x = 31,891.05 × 6,469.80
  4. Step 4: Simplify right side
    21,259.62x = 206,328,715.29
  5. Step 5: Solve for x
    x = 206,328,715.29/21,259.62
  6. Step 6: Final answer
    x = 9,705.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.