Home / 21,310.11-29,408.06-12,362.90

Finding the Fourth Proportional to 21,310.11, 29,408.06 and 12,362.90

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Solution

The fourth proportional to 21,310.11, 29,408.06 and 12,362.90 is: 17,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.11 : 29,408.06 = 12,362.90 : x
  2. Step 2: Convert to fraction form
    21,310.11/29,408.06 = 12,362.90/x
  3. Step 3: Cross multiply
    21,310.11x = 29,408.06 × 12,362.90
  4. Step 4: Simplify right side
    21,310.11x = 363,568,696.12
  5. Step 5: Solve for x
    x = 363,568,696.12/21,310.11
  6. Step 6: Final answer
    x = 17,060.85

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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.