Home / 28,119.96-42,179.94-11,487.84

Finding the Fourth Proportional to 28,119.96, 42,179.94 and 11,487.84

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Solution

The fourth proportional to 28,119.96, 42,179.94 and 11,487.84 is: 17,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.96 : 42,179.94 = 11,487.84 : x
  2. Step 2: Convert to fraction form
    28,119.96/42,179.94 = 11,487.84/x
  3. Step 3: Cross multiply
    28,119.96x = 42,179.94 × 11,487.84
  4. Step 4: Simplify right side
    28,119.96x = 484,556,401.93
  5. Step 5: Solve for x
    x = 484,556,401.93/28,119.96
  6. Step 6: Final answer
    x = 17,231.76

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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.