Home / 11,939.87-17,910.93-4,920.35

Finding the Fourth Proportional to 11,939.87, 17,910.93 and 4,920.35

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Solution

The fourth proportional to 11,939.87, 17,910.93 and 4,920.35 is: 7,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.87 : 17,910.93 = 4,920.35 : x
  2. Step 2: Convert to fraction form
    11,939.87/17,910.93 = 4,920.35/x
  3. Step 3: Cross multiply
    11,939.87x = 17,910.93 × 4,920.35
  4. Step 4: Simplify right side
    11,939.87x = 88,127,954.87
  5. Step 5: Solve for x
    x = 88,127,954.87/11,939.87
  6. Step 6: Final answer
    x = 7,380.98

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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.