Home / 11,123.78-15,350.94-6,408.05

Finding the Fourth Proportional to 11,123.78, 15,350.94 and 6,408.05

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Solution

The fourth proportional to 11,123.78, 15,350.94 and 6,408.05 is: 8,843.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.78 : 15,350.94 = 6,408.05 : x
  2. Step 2: Convert to fraction form
    11,123.78/15,350.94 = 6,408.05/x
  3. Step 3: Cross multiply
    11,123.78x = 15,350.94 × 6,408.05
  4. Step 4: Simplify right side
    11,123.78x = 98,369,514.31
  5. Step 5: Solve for x
    x = 98,369,514.31/11,123.78
  6. Step 6: Final answer
    x = 8,843.18

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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.