Home / 21,176.11-29,223.26-11,745.28

Finding the Fourth Proportional to 21,176.11, 29,223.26 and 11,745.28

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Solution

The fourth proportional to 21,176.11, 29,223.26 and 11,745.28 is: 16,208.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.11 : 29,223.26 = 11,745.28 : x
  2. Step 2: Convert to fraction form
    21,176.11/29,223.26 = 11,745.28/x
  3. Step 3: Cross multiply
    21,176.11x = 29,223.26 × 11,745.28
  4. Step 4: Simplify right side
    21,176.11x = 343,235,371.21
  5. Step 5: Solve for x
    x = 343,235,371.21/21,176.11
  6. Step 6: Final answer
    x = 16,208.61

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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.