Home / 10,939.86-16,409.79-4,012.74

Finding the Fourth Proportional to 10,939.86, 16,409.79 and 4,012.74

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Solution

The fourth proportional to 10,939.86, 16,409.79 and 4,012.74 is: 6,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.86 : 16,409.79 = 4,012.74 : x
  2. Step 2: Convert to fraction form
    10,939.86/16,409.79 = 4,012.74/x
  3. Step 3: Cross multiply
    10,939.86x = 16,409.79 × 4,012.74
  4. Step 4: Simplify right side
    10,939.86x = 65,848,220.72
  5. Step 5: Solve for x
    x = 65,848,220.72/10,939.86
  6. Step 6: Final answer
    x = 6,019.11

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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.