Home / 11,109.62-15,331.55-6,635.95

Finding the Fourth Proportional to 11,109.62, 15,331.55 and 6,635.95

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Solution

The fourth proportional to 11,109.62, 15,331.55 and 6,635.95 is: 9,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.62 : 15,331.55 = 6,635.95 : x
  2. Step 2: Convert to fraction form
    11,109.62/15,331.55 = 6,635.95/x
  3. Step 3: Cross multiply
    11,109.62x = 15,331.55 × 6,635.95
  4. Step 4: Simplify right side
    11,109.62x = 101,739,426.82
  5. Step 5: Solve for x
    x = 101,739,426.82/11,109.62
  6. Step 6: Final answer
    x = 9,157.78

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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.