Home / 21,305.32-29,401.32-11,745.36

Finding the Fourth Proportional to 21,305.32, 29,401.32 and 11,745.36

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Solution

The fourth proportional to 21,305.32, 29,401.32 and 11,745.36 is: 16,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.32 : 29,401.32 = 11,745.36 : x
  2. Step 2: Convert to fraction form
    21,305.32/29,401.32 = 11,745.36/x
  3. Step 3: Cross multiply
    21,305.32x = 29,401.32 × 11,745.36
  4. Step 4: Simplify right side
    21,305.32x = 345,329,087.88
  5. Step 5: Solve for x
    x = 345,329,087.88/21,305.32
  6. Step 6: Final answer
    x = 16,208.58

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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.