Home / 11,680.15-16,118.10-6,643.66

Finding the Fourth Proportional to 11,680.15, 16,118.10 and 6,643.66

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Solution

The fourth proportional to 11,680.15, 16,118.10 and 6,643.66 is: 9,167.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.15 : 16,118.10 = 6,643.66 : x
  2. Step 2: Convert to fraction form
    11,680.15/16,118.10 = 6,643.66/x
  3. Step 3: Cross multiply
    11,680.15x = 16,118.10 × 6,643.66
  4. Step 4: Simplify right side
    11,680.15x = 107,083,135.95
  5. Step 5: Solve for x
    x = 107,083,135.95/11,680.15
  6. Step 6: Final answer
    x = 9,167.96

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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.