Home / 12,178.62-16,805.07-6,872.92

Finding the Fourth Proportional to 12,178.62, 16,805.07 and 6,872.92

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Solution

The fourth proportional to 12,178.62, 16,805.07 and 6,872.92 is: 9,483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.62 : 16,805.07 = 6,872.92 : x
  2. Step 2: Convert to fraction form
    12,178.62/16,805.07 = 6,872.92/x
  3. Step 3: Cross multiply
    12,178.62x = 16,805.07 × 6,872.92
  4. Step 4: Simplify right side
    12,178.62x = 115,499,859.69
  5. Step 5: Solve for x
    x = 115,499,859.69/12,178.62
  6. Step 6: Final answer
    x = 9,483.82

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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.