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Finding the Fourth Proportional to 16,191.21, 22,182.03 and 15,584.47

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Solution

The fourth proportional to 16,191.21, 22,182.03 and 15,584.47 is: 21,350.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,191.21 : 22,182.03 = 15,584.47 : x
  2. Step 2: Convert to fraction form
    16,191.21/22,182.03 = 15,584.47/x
  3. Step 3: Cross multiply
    16,191.21x = 22,182.03 × 15,584.47
  4. Step 4: Simplify right side
    16,191.21x = 345,695,181.07
  5. Step 5: Solve for x
    x = 345,695,181.07/16,191.21
  6. Step 6: Final answer
    x = 21,350.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.