Home / 10,939.74-16,409.60-3,148.54

Finding the Fourth Proportional to 10,939.74, 16,409.60 and 3,148.54

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Solution

The fourth proportional to 10,939.74, 16,409.60 and 3,148.54 is: 4,722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.74 : 16,409.60 = 3,148.54 : x
  2. Step 2: Convert to fraction form
    10,939.74/16,409.60 = 3,148.54/x
  3. Step 3: Cross multiply
    10,939.74x = 16,409.60 × 3,148.54
  4. Step 4: Simplify right side
    10,939.74x = 51,666,281.98
  5. Step 5: Solve for x
    x = 51,666,281.98/10,939.74
  6. Step 6: Final answer
    x = 4,722.81

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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.