Home / 11,137.88-15,357.66-8,338.52

Finding the Fourth Proportional to 11,137.88, 15,357.66 and 8,338.52

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Solution

The fourth proportional to 11,137.88, 15,357.66 and 8,338.52 is: 11,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.88 : 15,357.66 = 8,338.52 : x
  2. Step 2: Convert to fraction form
    11,137.88/15,357.66 = 8,338.52/x
  3. Step 3: Cross multiply
    11,137.88x = 15,357.66 × 8,338.52
  4. Step 4: Simplify right side
    11,137.88x = 128,060,155.06
  5. Step 5: Solve for x
    x = 128,060,155.06/11,137.88
  6. Step 6: Final answer
    x = 11,497.71

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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.