Home / 15,922.26-21,972.30-9,207.36

Finding the Fourth Proportional to 15,922.26, 21,972.30 and 9,207.36

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Solution

The fourth proportional to 15,922.26, 21,972.30 and 9,207.36 is: 12,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,922.26 : 21,972.30 = 9,207.36 : x
  2. Step 2: Convert to fraction form
    15,922.26/21,972.30 = 9,207.36/x
  3. Step 3: Cross multiply
    15,922.26x = 21,972.30 × 9,207.36
  4. Step 4: Simplify right side
    15,922.26x = 202,306,876.13
  5. Step 5: Solve for x
    x = 202,306,876.13/15,922.26
  6. Step 6: Final answer
    x = 12,705.91

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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.