Home / 20,142.18-30,186.99-10,273.14

Finding the Fourth Proportional to 20,142.18, 30,186.99 and 10,273.14

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Solution

The fourth proportional to 20,142.18, 30,186.99 and 10,273.14 is: 15,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.18 : 30,186.99 = 10,273.14 : x
  2. Step 2: Convert to fraction form
    20,142.18/30,186.99 = 10,273.14/x
  3. Step 3: Cross multiply
    20,142.18x = 30,186.99 × 10,273.14
  4. Step 4: Simplify right side
    20,142.18x = 310,115,174.45
  5. Step 5: Solve for x
    x = 310,115,174.45/20,142.18
  6. Step 6: Final answer
    x = 15,396.31

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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.