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Finding the Fourth Proportional to 14,912.99, 20,579.13 and 8,197.32

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Solution

The fourth proportional to 14,912.99, 20,579.13 and 8,197.32 is: 11,311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,912.99 : 20,579.13 = 8,197.32 : x
  2. Step 2: Convert to fraction form
    14,912.99/20,579.13 = 8,197.32/x
  3. Step 3: Cross multiply
    14,912.99x = 20,579.13 × 8,197.32
  4. Step 4: Simplify right side
    14,912.99x = 168,693,765.38
  5. Step 5: Solve for x
    x = 168,693,765.38/14,912.99
  6. Step 6: Final answer
    x = 11,311.87

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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.