Home / 12,121.19-16,727.14-6,815.89

Finding the Fourth Proportional to 12,121.19, 16,727.14 and 6,815.89

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Solution

The fourth proportional to 12,121.19, 16,727.14 and 6,815.89 is: 9,405.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.19 : 16,727.14 = 6,815.89 : x
  2. Step 2: Convert to fraction form
    12,121.19/16,727.14 = 6,815.89/x
  3. Step 3: Cross multiply
    12,121.19x = 16,727.14 × 6,815.89
  4. Step 4: Simplify right side
    12,121.19x = 114,010,371.03
  5. Step 5: Solve for x
    x = 114,010,371.03/12,121.19
  6. Step 6: Final answer
    x = 9,405.87

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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.