Home / 11,979.30-16,530.78-6,600.68

Finding the Fourth Proportional to 11,979.30, 16,530.78 and 6,600.68

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Solution

The fourth proportional to 11,979.30, 16,530.78 and 6,600.68 is: 9,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.30 : 16,530.78 = 6,600.68 : x
  2. Step 2: Convert to fraction form
    11,979.30/16,530.78 = 6,600.68/x
  3. Step 3: Cross multiply
    11,979.30x = 16,530.78 × 6,600.68
  4. Step 4: Simplify right side
    11,979.30x = 109,114,388.93
  5. Step 5: Solve for x
    x = 109,114,388.93/11,979.30
  6. Step 6: Final answer
    x = 9,108.58

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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.