Home / 20,874.33-28,805.49-12,386.00

Finding the Fourth Proportional to 20,874.33, 28,805.49 and 12,386.00

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Solution

The fourth proportional to 20,874.33, 28,805.49 and 12,386.00 is: 17,092.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.33 : 28,805.49 = 12,386.00 : x
  2. Step 2: Convert to fraction form
    20,874.33/28,805.49 = 12,386.00/x
  3. Step 3: Cross multiply
    20,874.33x = 28,805.49 × 12,386.00
  4. Step 4: Simplify right side
    20,874.33x = 356,784,871.15
  5. Step 5: Solve for x
    x = 356,784,871.15/20,874.33
  6. Step 6: Final answer
    x = 17,092.04

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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.