Home / 11,115.99-15,344.34-6,867.75

Finding the Fourth Proportional to 11,115.99, 15,344.34 and 6,867.75

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Solution

The fourth proportional to 11,115.99, 15,344.34 and 6,867.75 is: 9,480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.99 : 15,344.34 = 6,867.75 : x
  2. Step 2: Convert to fraction form
    11,115.99/15,344.34 = 6,867.75/x
  3. Step 3: Cross multiply
    11,115.99x = 15,344.34 × 6,867.75
  4. Step 4: Simplify right side
    11,115.99x = 105,381,091.04
  5. Step 5: Solve for x
    x = 105,381,091.04/11,115.99
  6. Step 6: Final answer
    x = 9,480.14

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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.