Home / 11,689.29-16,131.69-6,384.33

Finding the Fourth Proportional to 11,689.29, 16,131.69 and 6,384.33

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Solution

The fourth proportional to 11,689.29, 16,131.69 and 6,384.33 is: 8,810.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.29 : 16,131.69 = 6,384.33 : x
  2. Step 2: Convert to fraction form
    11,689.29/16,131.69 = 6,384.33/x
  3. Step 3: Cross multiply
    11,689.29x = 16,131.69 × 6,384.33
  4. Step 4: Simplify right side
    11,689.29x = 102,990,032.42
  5. Step 5: Solve for x
    x = 102,990,032.42/11,689.29
  6. Step 6: Final answer
    x = 8,810.63

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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.