Home / 20,163.10-30,250.81-10,309.30

Finding the Fourth Proportional to 20,163.10, 30,250.81 and 10,309.30

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Solution

The fourth proportional to 20,163.10, 30,250.81 and 10,309.30 is: 15,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.10 : 30,250.81 = 10,309.30 : x
  2. Step 2: Convert to fraction form
    20,163.10/30,250.81 = 10,309.30/x
  3. Step 3: Cross multiply
    20,163.10x = 30,250.81 × 10,309.30
  4. Step 4: Simplify right side
    20,163.10x = 311,864,675.53
  5. Step 5: Solve for x
    x = 311,864,675.53/20,163.10
  6. Step 6: Final answer
    x = 15,467.10

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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.