Home / 11,717.89-16,170.07-6,411.68

Finding the Fourth Proportional to 11,717.89, 16,170.07 and 6,411.68

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Solution

The fourth proportional to 11,717.89, 16,170.07 and 6,411.68 is: 8,847.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,717.89 : 16,170.07 = 6,411.68 : x
  2. Step 2: Convert to fraction form
    11,717.89/16,170.07 = 6,411.68/x
  3. Step 3: Cross multiply
    11,717.89x = 16,170.07 × 6,411.68
  4. Step 4: Simplify right side
    11,717.89x = 103,677,314.42
  5. Step 5: Solve for x
    x = 103,677,314.42/11,717.89
  6. Step 6: Final answer
    x = 8,847.78

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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.