Home / 11,687.96-16,128.77-6,381.74

Finding the Fourth Proportional to 11,687.96, 16,128.77 and 6,381.74

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Solution

The fourth proportional to 11,687.96, 16,128.77 and 6,381.74 is: 8,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.96 : 16,128.77 = 6,381.74 : x
  2. Step 2: Convert to fraction form
    11,687.96/16,128.77 = 6,381.74/x
  3. Step 3: Cross multiply
    11,687.96x = 16,128.77 × 6,381.74
  4. Step 4: Simplify right side
    11,687.96x = 102,929,625.07
  5. Step 5: Solve for x
    x = 102,929,625.07/11,687.96
  6. Step 6: Final answer
    x = 8,806.46

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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.