Home / 12,196.80-16,831.35-6,891.84

Finding the Fourth Proportional to 12,196.80, 16,831.35 and 6,891.84

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Solution

The fourth proportional to 12,196.80, 16,831.35 and 6,891.84 is: 9,510.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,196.80 : 16,831.35 = 6,891.84 : x
  2. Step 2: Convert to fraction form
    12,196.80/16,831.35 = 6,891.84/x
  3. Step 3: Cross multiply
    12,196.80x = 16,831.35 × 6,891.84
  4. Step 4: Simplify right side
    12,196.80x = 115,998,971.18
  5. Step 5: Solve for x
    x = 115,998,971.18/12,196.80
  6. Step 6: Final answer
    x = 9,510.61

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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.