Home / 11,689.94-16,131.39-6,384.44

Finding the Fourth Proportional to 11,689.94, 16,131.39 and 6,384.44

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Solution

The fourth proportional to 11,689.94, 16,131.39 and 6,384.44 is: 8,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.94 : 16,131.39 = 6,384.44 : x
  2. Step 2: Convert to fraction form
    11,689.94/16,131.39 = 6,384.44/x
  3. Step 3: Cross multiply
    11,689.94x = 16,131.39 × 6,384.44
  4. Step 4: Simplify right side
    11,689.94x = 102,989,810.91
  5. Step 5: Solve for x
    x = 102,989,810.91/11,689.94
  6. Step 6: Final answer
    x = 8,810.13

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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.