Home / 11,687.32-16,128.30-6,381.64

Finding the Fourth Proportional to 11,687.32, 16,128.30 and 6,381.64

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Solution

The fourth proportional to 11,687.32, 16,128.30 and 6,381.64 is: 8,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.32 : 16,128.30 = 6,381.64 : x
  2. Step 2: Convert to fraction form
    11,687.32/16,128.30 = 6,381.64/x
  3. Step 3: Cross multiply
    11,687.32x = 16,128.30 × 6,381.64
  4. Step 4: Simplify right side
    11,687.32x = 102,925,004.41
  5. Step 5: Solve for x
    x = 102,925,004.41/11,687.32
  6. Step 6: Final answer
    x = 8,806.55

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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.