Home / 14,081.80-21,121.60-3,693.28

Finding the Fourth Proportional to 14,081.80, 21,121.60 and 3,693.28

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Solution

The fourth proportional to 14,081.80, 21,121.60 and 3,693.28 is: 5,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,081.80 : 21,121.60 = 3,693.28 : x
  2. Step 2: Convert to fraction form
    14,081.80/21,121.60 = 3,693.28/x
  3. Step 3: Cross multiply
    14,081.80x = 21,121.60 × 3,693.28
  4. Step 4: Simplify right side
    14,081.80x = 78,007,982.85
  5. Step 5: Solve for x
    x = 78,007,982.85/14,081.80
  6. Step 6: Final answer
    x = 5,539.63

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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.