Home / 20,121.92-30,190.08-10,263.68

Finding the Fourth Proportional to 20,121.92, 30,190.08 and 10,263.68

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Solution

The fourth proportional to 20,121.92, 30,190.08 and 10,263.68 is: 15,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.92 : 30,190.08 = 10,263.68 : x
  2. Step 2: Convert to fraction form
    20,121.92/30,190.08 = 10,263.68/x
  3. Step 3: Cross multiply
    20,121.92x = 30,190.08 × 10,263.68
  4. Step 4: Simplify right side
    20,121.92x = 309,861,320.29
  5. Step 5: Solve for x
    x = 309,861,320.29/20,121.92
  6. Step 6: Final answer
    x = 15,399.19

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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.