Home / 11,687.37-16,128.99-6,382.41

Finding the Fourth Proportional to 11,687.37, 16,128.99 and 6,382.41

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Solution

The fourth proportional to 11,687.37, 16,128.99 and 6,382.41 is: 8,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.37 : 16,128.99 = 6,382.41 : x
  2. Step 2: Convert to fraction form
    11,687.37/16,128.99 = 6,382.41/x
  3. Step 3: Cross multiply
    11,687.37x = 16,128.99 × 6,382.41
  4. Step 4: Simplify right side
    11,687.37x = 102,941,827.07
  5. Step 5: Solve for x
    x = 102,941,827.07/11,687.37
  6. Step 6: Final answer
    x = 8,807.95

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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.