Home / 15,822.25-21,834.75-9,107.75

Finding the Fourth Proportional to 15,822.25, 21,834.75 and 9,107.75

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Solution

The fourth proportional to 15,822.25, 21,834.75 and 9,107.75 is: 12,568.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.25 : 21,834.75 = 9,107.75 : x
  2. Step 2: Convert to fraction form
    15,822.25/21,834.75 = 9,107.75/x
  3. Step 3: Cross multiply
    15,822.25x = 21,834.75 × 9,107.75
  4. Step 4: Simplify right side
    15,822.25x = 198,865,533.05
  5. Step 5: Solve for x
    x = 198,865,533.05/15,822.25
  6. Step 6: Final answer
    x = 12,568.73

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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.