Home / 11,240.10-16,860.15-5,408.10

Finding the Fourth Proportional to 11,240.10, 16,860.15 and 5,408.10

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Solution

The fourth proportional to 11,240.10, 16,860.15 and 5,408.10 is: 8,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.10 : 16,860.15 = 5,408.10 : x
  2. Step 2: Convert to fraction form
    11,240.10/16,860.15 = 5,408.10/x
  3. Step 3: Cross multiply
    11,240.10x = 16,860.15 × 5,408.10
  4. Step 4: Simplify right side
    11,240.10x = 91,181,377.22
  5. Step 5: Solve for x
    x = 91,181,377.22/11,240.10
  6. Step 6: Final answer
    x = 8,112.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.