Home / 21,305.57-29,401.67-11,745.61

Finding the Fourth Proportional to 21,305.57, 29,401.67 and 11,745.61

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Solution

The fourth proportional to 21,305.57, 29,401.67 and 11,745.61 is: 16,208.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.57 : 29,401.67 = 11,745.61 : x
  2. Step 2: Convert to fraction form
    21,305.57/29,401.67 = 11,745.61/x
  3. Step 3: Cross multiply
    21,305.57x = 29,401.67 × 11,745.61
  4. Step 4: Simplify right side
    21,305.57x = 345,340,505.03
  5. Step 5: Solve for x
    x = 345,340,505.03/21,305.57
  6. Step 6: Final answer
    x = 16,208.93

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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.