Home / 21,238.18-29,306.13-11,676.49

Finding the Fourth Proportional to 21,238.18, 29,306.13 and 11,676.49

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Solution

The fourth proportional to 21,238.18, 29,306.13 and 11,676.49 is: 16,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.18 : 29,306.13 = 11,676.49 : x
  2. Step 2: Convert to fraction form
    21,238.18/29,306.13 = 11,676.49/x
  3. Step 3: Cross multiply
    21,238.18x = 29,306.13 × 11,676.49
  4. Step 4: Simplify right side
    21,238.18x = 342,192,733.88
  5. Step 5: Solve for x
    x = 342,192,733.88/21,238.18
  6. Step 6: Final answer
    x = 16,112.15

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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.