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Finding the Fourth Proportional to 14,976.14, 20,662.53 and 8,687.30

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Solution

The fourth proportional to 14,976.14, 20,662.53 and 8,687.30 is: 11,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,976.14 : 20,662.53 = 8,687.30 : x
  2. Step 2: Convert to fraction form
    14,976.14/20,662.53 = 8,687.30/x
  3. Step 3: Cross multiply
    14,976.14x = 20,662.53 × 8,687.30
  4. Step 4: Simplify right side
    14,976.14x = 179,501,493.56
  5. Step 5: Solve for x
    x = 179,501,493.56/14,976.14
  6. Step 6: Final answer
    x = 11,985.84

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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.