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Finding the Fourth Proportional to 12,658.96, 17,449.50 and 8,673.22

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Solution

The fourth proportional to 12,658.96, 17,449.50 and 8,673.22 is: 11,955.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.96 : 17,449.50 = 8,673.22 : x
  2. Step 2: Convert to fraction form
    12,658.96/17,449.50 = 8,673.22/x
  3. Step 3: Cross multiply
    12,658.96x = 17,449.50 × 8,673.22
  4. Step 4: Simplify right side
    12,658.96x = 151,343,352.39
  5. Step 5: Solve for x
    x = 151,343,352.39/12,658.96
  6. Step 6: Final answer
    x = 11,955.43

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Double scale
Find fourth proportional to 12,659.96, 17,450.88 and 8,674.22
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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.