Home / 20,074.44-30,139.24-10,220.34

Finding the Fourth Proportional to 20,074.44, 30,139.24 and 10,220.34

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Solution

The fourth proportional to 20,074.44, 30,139.24 and 10,220.34 is: 15,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.44 : 30,139.24 = 10,220.34 : x
  2. Step 2: Convert to fraction form
    20,074.44/30,139.24 = 10,220.34/x
  3. Step 3: Cross multiply
    20,074.44x = 30,139.24 × 10,220.34
  4. Step 4: Simplify right side
    20,074.44x = 308,033,280.14
  5. Step 5: Solve for x
    x = 308,033,280.14/20,074.44
  6. Step 6: Final answer
    x = 15,344.55

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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.