Home / 11,712.85-16,163.78-6,407.75

Finding the Fourth Proportional to 11,712.85, 16,163.78 and 6,407.75

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Solution

The fourth proportional to 11,712.85, 16,163.78 and 6,407.75 is: 8,842.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.85 : 16,163.78 = 6,407.75 : x
  2. Step 2: Convert to fraction form
    11,712.85/16,163.78 = 6,407.75/x
  3. Step 3: Cross multiply
    11,712.85x = 16,163.78 × 6,407.75
  4. Step 4: Simplify right side
    11,712.85x = 103,573,429.26
  5. Step 5: Solve for x
    x = 103,573,429.26/11,712.85
  6. Step 6: Final answer
    x = 8,842.72

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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.