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Finding the Fourth Proportional to 22,681.44, 31,300.20 and 12,609.84

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Solution

The fourth proportional to 22,681.44, 31,300.20 and 12,609.84 is: 17,401.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,681.44 : 31,300.20 = 12,609.84 : x
  2. Step 2: Convert to fraction form
    22,681.44/31,300.20 = 12,609.84/x
  3. Step 3: Cross multiply
    22,681.44x = 31,300.20 × 12,609.84
  4. Step 4: Simplify right side
    22,681.44x = 394,690,513.97
  5. Step 5: Solve for x
    x = 394,690,513.97/22,681.44
  6. Step 6: Final answer
    x = 17,401.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.