Home / 11,515.14-17,272.71-7,618.64

Finding the Fourth Proportional to 11,515.14, 17,272.71 and 7,618.64

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Solution

The fourth proportional to 11,515.14, 17,272.71 and 7,618.64 is: 11,427.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.14 : 17,272.71 = 7,618.64 : x
  2. Step 2: Convert to fraction form
    11,515.14/17,272.71 = 7,618.64/x
  3. Step 3: Cross multiply
    11,515.14x = 17,272.71 × 7,618.64
  4. Step 4: Simplify right side
    11,515.14x = 131,594,472.95
  5. Step 5: Solve for x
    x = 131,594,472.95/11,515.14
  6. Step 6: Final answer
    x = 11,427.95

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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.