Home / 15,514.67-21,408.35-8,799.96

Finding the Fourth Proportional to 15,514.67, 21,408.35 and 8,799.96

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Solution

The fourth proportional to 15,514.67, 21,408.35 and 8,799.96 is: 12,142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.67 : 21,408.35 = 8,799.96 : x
  2. Step 2: Convert to fraction form
    15,514.67/21,408.35 = 8,799.96/x
  3. Step 3: Cross multiply
    15,514.67x = 21,408.35 × 8,799.96
  4. Step 4: Simplify right side
    15,514.67x = 188,392,579.67
  5. Step 5: Solve for x
    x = 188,392,579.67/15,514.67
  6. Step 6: Final answer
    x = 12,142.87

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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.