Home / 13,687.78-20,532.45-3,827.04

Finding the Fourth Proportional to 13,687.78, 20,532.45 and 3,827.04

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Solution

The fourth proportional to 13,687.78, 20,532.45 and 3,827.04 is: 5,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.78 : 20,532.45 = 3,827.04 : x
  2. Step 2: Convert to fraction form
    13,687.78/20,532.45 = 3,827.04/x
  3. Step 3: Cross multiply
    13,687.78x = 20,532.45 × 3,827.04
  4. Step 4: Simplify right side
    13,687.78x = 78,578,507.45
  5. Step 5: Solve for x
    x = 78,578,507.45/13,687.78
  6. Step 6: Final answer
    x = 5,740.78

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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.