Home / 20,322.20-30,484.10-7,172.68

Finding the Fourth Proportional to 20,322.20, 30,484.10 and 7,172.68

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Solution

The fourth proportional to 20,322.20, 30,484.10 and 7,172.68 is: 10,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.20 : 30,484.10 = 7,172.68 : x
  2. Step 2: Convert to fraction form
    20,322.20/30,484.10 = 7,172.68/x
  3. Step 3: Cross multiply
    20,322.20x = 30,484.10 × 7,172.68
  4. Step 4: Simplify right side
    20,322.20x = 218,652,694.39
  5. Step 5: Solve for x
    x = 218,652,694.39/20,322.20
  6. Step 6: Final answer
    x = 10,759.30

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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.