Home / 11,431.52-15,775.41-6,651.55

Finding the Fourth Proportional to 11,431.52, 15,775.41 and 6,651.55

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Solution

The fourth proportional to 11,431.52, 15,775.41 and 6,651.55 is: 9,179.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.52 : 15,775.41 = 6,651.55 : x
  2. Step 2: Convert to fraction form
    11,431.52/15,775.41 = 6,651.55/x
  3. Step 3: Cross multiply
    11,431.52x = 15,775.41 × 6,651.55
  4. Step 4: Simplify right side
    11,431.52x = 104,930,928.39
  5. Step 5: Solve for x
    x = 104,930,928.39/11,431.52
  6. Step 6: Final answer
    x = 9,179.09

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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.