Home / 21,103.34-29,121.73-11,671.29

Finding the Fourth Proportional to 21,103.34, 29,121.73 and 11,671.29

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Solution

The fourth proportional to 21,103.34, 29,121.73 and 11,671.29 is: 16,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.34 : 29,121.73 = 11,671.29 : x
  2. Step 2: Convert to fraction form
    21,103.34/29,121.73 = 11,671.29/x
  3. Step 3: Cross multiply
    21,103.34x = 29,121.73 × 11,671.29
  4. Step 4: Simplify right side
    21,103.34x = 339,888,126.95
  5. Step 5: Solve for x
    x = 339,888,126.95/21,103.34
  6. Step 6: Final answer
    x = 16,105.90

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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.