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Finding the Fourth Proportional to 15,662.44, 21,614.42 and 8,589.64

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Solution

The fourth proportional to 15,662.44, 21,614.42 and 8,589.64 is: 11,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.44 : 21,614.42 = 8,589.64 : x
  2. Step 2: Convert to fraction form
    15,662.44/21,614.42 = 8,589.64/x
  3. Step 3: Cross multiply
    15,662.44x = 21,614.42 × 8,589.64
  4. Step 4: Simplify right side
    15,662.44x = 185,660,086.61
  5. Step 5: Solve for x
    x = 185,660,086.61/15,662.44
  6. Step 6: Final answer
    x = 11,853.84

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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.