Home / 11,949.12-16,489.80-6,643.98

Finding the Fourth Proportional to 11,949.12, 16,489.80 and 6,643.98

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Solution

The fourth proportional to 11,949.12, 16,489.80 and 6,643.98 is: 9,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.12 : 16,489.80 = 6,643.98 : x
  2. Step 2: Convert to fraction form
    11,949.12/16,489.80 = 6,643.98/x
  3. Step 3: Cross multiply
    11,949.12x = 16,489.80 × 6,643.98
  4. Step 4: Simplify right side
    11,949.12x = 109,557,901.40
  5. Step 5: Solve for x
    x = 109,557,901.40/11,949.12
  6. Step 6: Final answer
    x = 9,168.70

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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.