Home / 12,115.66-16,718.70-6,809.44

Finding the Fourth Proportional to 12,115.66, 16,718.70 and 6,809.44

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Solution

The fourth proportional to 12,115.66, 16,718.70 and 6,809.44 is: 9,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.66 : 16,718.70 = 6,809.44 : x
  2. Step 2: Convert to fraction form
    12,115.66/16,718.70 = 6,809.44/x
  3. Step 3: Cross multiply
    12,115.66x = 16,718.70 × 6,809.44
  4. Step 4: Simplify right side
    12,115.66x = 113,844,984.53
  5. Step 5: Solve for x
    x = 113,844,984.53/12,115.66
  6. Step 6: Final answer
    x = 9,396.52

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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.