Home / 11,687.21-16,128.24-6,382.05

Finding the Fourth Proportional to 11,687.21, 16,128.24 and 6,382.05

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Solution

The fourth proportional to 11,687.21, 16,128.24 and 6,382.05 is: 8,807.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.21 : 16,128.24 = 6,382.05 : x
  2. Step 2: Convert to fraction form
    11,687.21/16,128.24 = 6,382.05/x
  3. Step 3: Cross multiply
    11,687.21x = 16,128.24 × 6,382.05
  4. Step 4: Simplify right side
    11,687.21x = 102,931,234.09
  5. Step 5: Solve for x
    x = 102,931,234.09/11,687.21
  6. Step 6: Final answer
    x = 8,807.17

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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.