Home / 11,949.06-16,489.64-6,643.56

Finding the Fourth Proportional to 11,949.06, 16,489.64 and 6,643.56

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Solution

The fourth proportional to 11,949.06, 16,489.64 and 6,643.56 is: 9,168.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.06 : 16,489.64 = 6,643.56 : x
  2. Step 2: Convert to fraction form
    11,949.06/16,489.64 = 6,643.56/x
  3. Step 3: Cross multiply
    11,949.06x = 16,489.64 × 6,643.56
  4. Step 4: Simplify right side
    11,949.06x = 109,549,912.72
  5. Step 5: Solve for x
    x = 109,549,912.72/11,949.06
  6. Step 6: Final answer
    x = 9,168.08

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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.