Home / 20,555.22-30,835.20-7,224.12

Finding the Fourth Proportional to 20,555.22, 30,835.20 and 7,224.12

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Solution

The fourth proportional to 20,555.22, 30,835.20 and 7,224.12 is: 10,837.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.22 : 30,835.20 = 7,224.12 : x
  2. Step 2: Convert to fraction form
    20,555.22/30,835.20 = 7,224.12/x
  3. Step 3: Cross multiply
    20,555.22x = 30,835.20 × 7,224.12
  4. Step 4: Simplify right side
    20,555.22x = 222,757,185.02
  5. Step 5: Solve for x
    x = 222,757,185.02/20,555.22
  6. Step 6: Final answer
    x = 10,837.01

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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.