Home / 20,021.20-30,006.60-10,163.20

Finding the Fourth Proportional to 20,021.20, 30,006.60 and 10,163.20

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Solution

The fourth proportional to 20,021.20, 30,006.60 and 10,163.20 is: 15,232.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.20 : 30,006.60 = 10,163.20 : x
  2. Step 2: Convert to fraction form
    20,021.20/30,006.60 = 10,163.20/x
  3. Step 3: Cross multiply
    20,021.20x = 30,006.60 × 10,163.20
  4. Step 4: Simplify right side
    20,021.20x = 304,963,077.12
  5. Step 5: Solve for x
    x = 304,963,077.12/20,021.20
  6. Step 6: Final answer
    x = 15,232.01

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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.