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Finding the Fourth Proportional to 15,181.12, 20,952 and 8,896

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Solution

The fourth proportional to 15,181.12, 20,952 and 8,896 is: 12,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,181.12 : 20,952 = 8,896 : x
  2. Step 2: Convert to fraction form
    15,181.12/20,952 = 8,896/x
  3. Step 3: Cross multiply
    15,181.12x = 20,952 × 8,896
  4. Step 4: Simplify right side
    15,181.12x = 186,388,992
  5. Step 5: Solve for x
    x = 186,388,992/15,181.12
  6. Step 6: Final answer
    x = 12,277.68

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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.