Home / 12,178.66-16,806.84-6,872.48

Finding the Fourth Proportional to 12,178.66, 16,806.84 and 6,872.48

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Solution

The fourth proportional to 12,178.66, 16,806.84 and 6,872.48 is: 9,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.66 : 16,806.84 = 6,872.48 : x
  2. Step 2: Convert to fraction form
    12,178.66/16,806.84 = 6,872.48/x
  3. Step 3: Cross multiply
    12,178.66x = 16,806.84 × 6,872.48
  4. Step 4: Simplify right side
    12,178.66x = 115,504,671.76
  5. Step 5: Solve for x
    x = 115,504,671.76/12,178.66
  6. Step 6: Final answer
    x = 9,484.19

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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.