Home / 12,065.12-16,649.43-6,687.79

Finding the Fourth Proportional to 12,065.12, 16,649.43 and 6,687.79

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Solution

The fourth proportional to 12,065.12, 16,649.43 and 6,687.79 is: 9,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,065.12 : 16,649.43 = 6,687.79 : x
  2. Step 2: Convert to fraction form
    12,065.12/16,649.43 = 6,687.79/x
  3. Step 3: Cross multiply
    12,065.12x = 16,649.43 × 6,687.79
  4. Step 4: Simplify right side
    12,065.12x = 111,347,824.76
  5. Step 5: Solve for x
    x = 111,347,824.76/12,065.12
  6. Step 6: Final answer
    x = 9,228.90

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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.