Home / 21,310.08-29,408.11-11,750.31

Finding the Fourth Proportional to 21,310.08, 29,408.11 and 11,750.31

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Solution

The fourth proportional to 21,310.08, 29,408.11 and 11,750.31 is: 16,215.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.08 : 29,408.11 = 11,750.31 : x
  2. Step 2: Convert to fraction form
    21,310.08/29,408.11 = 11,750.31/x
  3. Step 3: Cross multiply
    21,310.08x = 29,408.11 × 11,750.31
  4. Step 4: Simplify right side
    21,310.08x = 345,554,335.49
  5. Step 5: Solve for x
    x = 345,554,335.49/21,310.08
  6. Step 6: Final answer
    x = 16,215.54

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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.