Home / 15,787.65-21,791.25-9,073.97

Finding the Fourth Proportional to 15,787.65, 21,791.25 and 9,073.97

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Solution

The fourth proportional to 15,787.65, 21,791.25 and 9,073.97 is: 12,524.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787.65 : 21,791.25 = 9,073.97 : x
  2. Step 2: Convert to fraction form
    15,787.65/21,791.25 = 9,073.97/x
  3. Step 3: Cross multiply
    15,787.65x = 21,791.25 × 9,073.97
  4. Step 4: Simplify right side
    15,787.65x = 197,733,039.81
  5. Step 5: Solve for x
    x = 197,733,039.81/15,787.65
  6. Step 6: Final answer
    x = 12,524.54

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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.