Home / 11,949.30-16,489.98-6,643.80

Finding the Fourth Proportional to 11,949.30, 16,489.98 and 6,643.80

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Solution

The fourth proportional to 11,949.30, 16,489.98 and 6,643.80 is: 9,168.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.30 : 16,489.98 = 6,643.80 : x
  2. Step 2: Convert to fraction form
    11,949.30/16,489.98 = 6,643.80/x
  3. Step 3: Cross multiply
    11,949.30x = 16,489.98 × 6,643.80
  4. Step 4: Simplify right side
    11,949.30x = 109,556,129.12
  5. Step 5: Solve for x
    x = 109,556,129.12/11,949.30
  6. Step 6: Final answer
    x = 9,168.41

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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.