Home / 11,121.86-16,685.22-3,330.06

Finding the Fourth Proportional to 11,121.86, 16,685.22 and 3,330.06

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Solution

The fourth proportional to 11,121.86, 16,685.22 and 3,330.06 is: 4,995.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.86 : 16,685.22 = 3,330.06 : x
  2. Step 2: Convert to fraction form
    11,121.86/16,685.22 = 3,330.06/x
  3. Step 3: Cross multiply
    11,121.86x = 16,685.22 × 3,330.06
  4. Step 4: Simplify right side
    11,121.86x = 55,562,783.71
  5. Step 5: Solve for x
    x = 55,562,783.71/11,121.86
  6. Step 6: Final answer
    x = 4,995.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.