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Finding the Fourth Proportional to 11,658.79, 17,481.77 and 7,965.19

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Solution

The fourth proportional to 11,658.79, 17,481.77 and 7,965.19 is: 11,943.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,658.79 : 17,481.77 = 7,965.19 : x
  2. Step 2: Convert to fraction form
    11,658.79/17,481.77 = 7,965.19/x
  3. Step 3: Cross multiply
    11,658.79x = 17,481.77 × 7,965.19
  4. Step 4: Simplify right side
    11,658.79x = 139,245,565.93
  5. Step 5: Solve for x
    x = 139,245,565.93/11,658.79
  6. Step 6: Final answer
    x = 11,943.40

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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.