Home / 11,920.50-16,444.62-8,385.66

Finding the Fourth Proportional to 11,920.50, 16,444.62 and 8,385.66

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Solution

The fourth proportional to 11,920.50, 16,444.62 and 8,385.66 is: 11,568.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.50 : 16,444.62 = 8,385.66 : x
  2. Step 2: Convert to fraction form
    11,920.50/16,444.62 = 8,385.66/x
  3. Step 3: Cross multiply
    11,920.50x = 16,444.62 × 8,385.66
  4. Step 4: Simplify right side
    11,920.50x = 137,898,992.15
  5. Step 5: Solve for x
    x = 137,898,992.15/11,920.50
  6. Step 6: Final answer
    x = 11,568.22

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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.