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Finding the Fourth Proportional to 18,185.74, 27,278.61 and 15,713.08

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Solution

The fourth proportional to 18,185.74, 27,278.61 and 15,713.08 is: 23,569.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,185.74 : 27,278.61 = 15,713.08 : x
  2. Step 2: Convert to fraction form
    18,185.74/27,278.61 = 15,713.08/x
  3. Step 3: Cross multiply
    18,185.74x = 27,278.61 × 15,713.08
  4. Step 4: Simplify right side
    18,185.74x = 428,630,981.22
  5. Step 5: Solve for x
    x = 428,630,981.22/18,185.74
  6. Step 6: Final answer
    x = 23,569.62

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Similar ratio
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1.5x scale

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.