Home / 11,118.92-15,322.91-7,969.64

Finding the Fourth Proportional to 11,118.92, 15,322.91 and 7,969.64

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Solution

The fourth proportional to 11,118.92, 15,322.91 and 7,969.64 is: 10,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.92 : 15,322.91 = 7,969.64 : x
  2. Step 2: Convert to fraction form
    11,118.92/15,322.91 = 7,969.64/x
  3. Step 3: Cross multiply
    11,118.92x = 15,322.91 × 7,969.64
  4. Step 4: Simplify right side
    11,118.92x = 122,117,959.99
  5. Step 5: Solve for x
    x = 122,117,959.99/11,118.92
  6. Step 6: Final answer
    x = 10,982.90

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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.