Home / 20,119.92-30,187.08-10,261.68

Finding the Fourth Proportional to 20,119.92, 30,187.08 and 10,261.68

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Solution

The fourth proportional to 20,119.92, 30,187.08 and 10,261.68 is: 15,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.92 : 30,187.08 = 10,261.68 : x
  2. Step 2: Convert to fraction form
    20,119.92/30,187.08 = 10,261.68/x
  3. Step 3: Cross multiply
    20,119.92x = 30,187.08 × 10,261.68
  4. Step 4: Simplify right side
    20,119.92x = 309,770,155.09
  5. Step 5: Solve for x
    x = 309,770,155.09/20,119.92
  6. Step 6: Final answer
    x = 15,396.19

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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.