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Finding the Fourth Proportional to 27,975, 38,605.62 and 15,399.96

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Solution

The fourth proportional to 27,975, 38,605.62 and 15,399.96 is: 21,252.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,975 : 38,605.62 = 15,399.96 : x
  2. Step 2: Convert to fraction form
    27,975/38,605.62 = 15,399.96/x
  3. Step 3: Cross multiply
    27,975x = 38,605.62 × 15,399.96
  4. Step 4: Simplify right side
    27,975x = 594,525,003.78
  5. Step 5: Solve for x
    x = 594,525,003.78/27,975
  6. Step 6: Final answer
    x = 21,252.01

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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.