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Finding the Fourth Proportional to 15,188.99, 20,958.08 and 8,473.01

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Solution

The fourth proportional to 15,188.99, 20,958.08 and 8,473.01 is: 11,691.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.99 : 20,958.08 = 8,473.01 : x
  2. Step 2: Convert to fraction form
    15,188.99/20,958.08 = 8,473.01/x
  3. Step 3: Cross multiply
    15,188.99x = 20,958.08 × 8,473.01
  4. Step 4: Simplify right side
    15,188.99x = 177,577,874.27
  5. Step 5: Solve for x
    x = 177,577,874.27/15,188.99
  6. Step 6: Final answer
    x = 11,691.23

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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.