Home / 21,135.50-29,167-11,704.68

Finding the Fourth Proportional to 21,135.50, 29,167 and 11,704.68

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Solution

The fourth proportional to 21,135.50, 29,167 and 11,704.68 is: 16,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.50 : 29,167 = 11,704.68 : x
  2. Step 2: Convert to fraction form
    21,135.50/29,167 = 11,704.68/x
  3. Step 3: Cross multiply
    21,135.50x = 29,167 × 11,704.68
  4. Step 4: Simplify right side
    21,135.50x = 341,390,401.56
  5. Step 5: Solve for x
    x = 341,390,401.56/21,135.50
  6. Step 6: Final answer
    x = 16,152.46

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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.