Home / 12,305.68-16,982.16-6,716.80

Finding the Fourth Proportional to 12,305.68, 16,982.16 and 6,716.80

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Solution

The fourth proportional to 12,305.68, 16,982.16 and 6,716.80 is: 9,269.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.68 : 16,982.16 = 6,716.80 : x
  2. Step 2: Convert to fraction form
    12,305.68/16,982.16 = 6,716.80/x
  3. Step 3: Cross multiply
    12,305.68x = 16,982.16 × 6,716.80
  4. Step 4: Simplify right side
    12,305.68x = 114,065,772.29
  5. Step 5: Solve for x
    x = 114,065,772.29/12,305.68
  6. Step 6: Final answer
    x = 9,269.36

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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.