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Finding the Fourth Proportional to 27,589, 38,072.96 and 15,013.75

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Solution

The fourth proportional to 27,589, 38,072.96 and 15,013.75 is: 20,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,589 : 38,072.96 = 15,013.75 : x
  2. Step 2: Convert to fraction form
    27,589/38,072.96 = 15,013.75/x
  3. Step 3: Cross multiply
    27,589x = 38,072.96 × 15,013.75
  4. Step 4: Simplify right side
    27,589x = 571,617,828.13
  5. Step 5: Solve for x
    x = 571,617,828.13/27,589
  6. Step 6: Final answer
    x = 20,719.05

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1.5x scale

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.