Home / 11,949.16-16,489.65-6,643.30

Finding the Fourth Proportional to 11,949.16, 16,489.65 and 6,643.30

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Solution

The fourth proportional to 11,949.16, 16,489.65 and 6,643.30 is: 9,167.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.16 : 16,489.65 = 6,643.30 : x
  2. Step 2: Convert to fraction form
    11,949.16/16,489.65 = 6,643.30/x
  3. Step 3: Cross multiply
    11,949.16x = 16,489.65 × 6,643.30
  4. Step 4: Simplify right side
    11,949.16x = 109,545,691.85
  5. Step 5: Solve for x
    x = 109,545,691.85/11,949.16
  6. Step 6: Final answer
    x = 9,167.65

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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.