Home / 10,185.80-15,279.44-3,519.54

Finding the Fourth Proportional to 10,185.80, 15,279.44 and 3,519.54

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Solution

The fourth proportional to 10,185.80, 15,279.44 and 3,519.54 is: 5,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.80 : 15,279.44 = 3,519.54 : x
  2. Step 2: Convert to fraction form
    10,185.80/15,279.44 = 3,519.54/x
  3. Step 3: Cross multiply
    10,185.80x = 15,279.44 × 3,519.54
  4. Step 4: Simplify right side
    10,185.80x = 53,776,582.66
  5. Step 5: Solve for x
    x = 53,776,582.66/10,185.80
  6. Step 6: Final answer
    x = 5,279.57

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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.