Home / 12,231.80-16,882.91-6,929.75

Finding the Fourth Proportional to 12,231.80, 16,882.91 and 6,929.75

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Solution

The fourth proportional to 12,231.80, 16,882.91 and 6,929.75 is: 9,564.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.80 : 16,882.91 = 6,929.75 : x
  2. Step 2: Convert to fraction form
    12,231.80/16,882.91 = 6,929.75/x
  3. Step 3: Cross multiply
    12,231.80x = 16,882.91 × 6,929.75
  4. Step 4: Simplify right side
    12,231.80x = 116,994,278.48
  5. Step 5: Solve for x
    x = 116,994,278.48/12,231.80
  6. Step 6: Final answer
    x = 9,564.76

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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.