Home / 20,553.78-30,832.46-7,225.64

Finding the Fourth Proportional to 20,553.78, 30,832.46 and 7,225.64

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Solution

The fourth proportional to 20,553.78, 30,832.46 and 7,225.64 is: 10,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.78 : 30,832.46 = 7,225.64 : x
  2. Step 2: Convert to fraction form
    20,553.78/30,832.46 = 7,225.64/x
  3. Step 3: Cross multiply
    20,553.78x = 30,832.46 × 7,225.64
  4. Step 4: Simplify right side
    20,553.78x = 222,784,065.98
  5. Step 5: Solve for x
    x = 222,784,065.98/20,553.78
  6. Step 6: Final answer
    x = 10,839.08

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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.