Home / 11,712.85-16,163.72-6,407.70

Finding the Fourth Proportional to 11,712.85, 16,163.72 and 6,407.70

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Solution

The fourth proportional to 11,712.85, 16,163.72 and 6,407.70 is: 8,842.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.85 : 16,163.72 = 6,407.70 : x
  2. Step 2: Convert to fraction form
    11,712.85/16,163.72 = 6,407.70/x
  3. Step 3: Cross multiply
    11,712.85x = 16,163.72 × 6,407.70
  4. Step 4: Simplify right side
    11,712.85x = 103,572,284.66
  5. Step 5: Solve for x
    x = 103,572,284.66/11,712.85
  6. Step 6: Final answer
    x = 8,842.62

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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.