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Finding the Fourth Proportional to 11,449.60, 17,174.40 and 11,376.80

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Solution

The fourth proportional to 11,449.60, 17,174.40 and 11,376.80 is: 17,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,449.60 : 17,174.40 = 11,376.80 : x
  2. Step 2: Convert to fraction form
    11,449.60/17,174.40 = 11,376.80/x
  3. Step 3: Cross multiply
    11,449.60x = 17,174.40 × 11,376.80
  4. Step 4: Simplify right side
    11,449.60x = 195,389,713.92
  5. Step 5: Solve for x
    x = 195,389,713.92/11,449.60
  6. Step 6: Final answer
    x = 17,065.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.