Home / 12,186.86-16,815.80-6,882.17

Finding the Fourth Proportional to 12,186.86, 16,815.80 and 6,882.17

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Solution

The fourth proportional to 12,186.86, 16,815.80 and 6,882.17 is: 9,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.86 : 16,815.80 = 6,882.17 : x
  2. Step 2: Convert to fraction form
    12,186.86/16,815.80 = 6,882.17/x
  3. Step 3: Cross multiply
    12,186.86x = 16,815.80 × 6,882.17
  4. Step 4: Simplify right side
    12,186.86x = 115,729,127.41
  5. Step 5: Solve for x
    x = 115,729,127.41/12,186.86
  6. Step 6: Final answer
    x = 9,496.23

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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.