Home / 12,115.80-16,717.32-6,808.68

Finding the Fourth Proportional to 12,115.80, 16,717.32 and 6,808.68

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Solution

The fourth proportional to 12,115.80, 16,717.32 and 6,808.68 is: 9,394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.80 : 16,717.32 = 6,808.68 : x
  2. Step 2: Convert to fraction form
    12,115.80/16,717.32 = 6,808.68/x
  3. Step 3: Cross multiply
    12,115.80x = 16,717.32 × 6,808.68
  4. Step 4: Simplify right side
    12,115.80x = 113,822,882.34
  5. Step 5: Solve for x
    x = 113,822,882.34/12,115.80
  6. Step 6: Final answer
    x = 9,394.58

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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.