Home / 18,585.72-27,839.70-13,584.78

Finding the Fourth Proportional to 18,585.72, 27,839.70 and 13,584.78

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Solution

The fourth proportional to 18,585.72, 27,839.70 and 13,584.78 is: 20,348.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,585.72 : 27,839.70 = 13,584.78 : x
  2. Step 2: Convert to fraction form
    18,585.72/27,839.70 = 13,584.78/x
  3. Step 3: Cross multiply
    18,585.72x = 27,839.70 × 13,584.78
  4. Step 4: Simplify right side
    18,585.72x = 378,196,199.77
  5. Step 5: Solve for x
    x = 378,196,199.77/18,585.72
  6. Step 6: Final answer
    x = 20,348.75

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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.