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Finding the Fourth Proportional to 34,408.51, 51,613.29 and 15,687.79

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Solution

The fourth proportional to 34,408.51, 51,613.29 and 15,687.79 is: 23,531.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,408.51 : 51,613.29 = 15,687.79 : x
  2. Step 2: Convert to fraction form
    34,408.51/51,613.29 = 15,687.79/x
  3. Step 3: Cross multiply
    34,408.51x = 51,613.29 × 15,687.79
  4. Step 4: Simplify right side
    34,408.51x = 809,698,454.73
  5. Step 5: Solve for x
    x = 809,698,454.73/34,408.51
  6. Step 6: Final answer
    x = 23,531.92

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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.