Home / 22,154.28-30,704.90-21,739.56

Finding the Fourth Proportional to 22,154.28, 30,704.90 and 21,739.56

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Solution

The fourth proportional to 22,154.28, 30,704.90 and 21,739.56 is: 30,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,154.28 : 30,704.90 = 21,739.56 : x
  2. Step 2: Convert to fraction form
    22,154.28/30,704.90 = 21,739.56/x
  3. Step 3: Cross multiply
    22,154.28x = 30,704.90 × 21,739.56
  4. Step 4: Simplify right side
    22,154.28x = 667,511,015.84
  5. Step 5: Solve for x
    x = 667,511,015.84/22,154.28
  6. Step 6: Final answer
    x = 30,130.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.