Home / 21,292.05-31,941.84-8,805.09

Finding the Fourth Proportional to 21,292.05, 31,941.84 and 8,805.09

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Solution

The fourth proportional to 21,292.05, 31,941.84 and 8,805.09 is: 13,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.05 : 31,941.84 = 8,805.09 : x
  2. Step 2: Convert to fraction form
    21,292.05/31,941.84 = 8,805.09/x
  3. Step 3: Cross multiply
    21,292.05x = 31,941.84 × 8,805.09
  4. Step 4: Simplify right side
    21,292.05x = 281,250,775.97
  5. Step 5: Solve for x
    x = 281,250,775.97/21,292.05
  6. Step 6: Final answer
    x = 13,209.19

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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.