Home / 11,163.78-16,740.72-5,616.09

Finding the Fourth Proportional to 11,163.78, 16,740.72 and 5,616.09

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Solution

The fourth proportional to 11,163.78, 16,740.72 and 5,616.09 is: 8,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.78 : 16,740.72 = 5,616.09 : x
  2. Step 2: Convert to fraction form
    11,163.78/16,740.72 = 5,616.09/x
  3. Step 3: Cross multiply
    11,163.78x = 16,740.72 × 5,616.09
  4. Step 4: Simplify right side
    11,163.78x = 94,017,390.18
  5. Step 5: Solve for x
    x = 94,017,390.18/11,163.78
  6. Step 6: Final answer
    x = 8,421.64

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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.