Home / 12,121.64-16,727.28-6,816.96

Finding the Fourth Proportional to 12,121.64, 16,727.28 and 6,816.96

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Solution

The fourth proportional to 12,121.64, 16,727.28 and 6,816.96 is: 9,407.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.64 : 16,727.28 = 6,816.96 : x
  2. Step 2: Convert to fraction form
    12,121.64/16,727.28 = 6,816.96/x
  3. Step 3: Cross multiply
    12,121.64x = 16,727.28 × 6,816.96
  4. Step 4: Simplify right side
    12,121.64x = 114,029,198.67
  5. Step 5: Solve for x
    x = 114,029,198.67/12,121.64
  6. Step 6: Final answer
    x = 9,407.08

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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.