Home / 20,579.06-30,850.27-7,428.51

Finding the Fourth Proportional to 20,579.06, 30,850.27 and 7,428.51

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Solution

The fourth proportional to 20,579.06, 30,850.27 and 7,428.51 is: 11,136.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.06 : 30,850.27 = 7,428.51 : x
  2. Step 2: Convert to fraction form
    20,579.06/30,850.27 = 7,428.51/x
  3. Step 3: Cross multiply
    20,579.06x = 30,850.27 × 7,428.51
  4. Step 4: Simplify right side
    20,579.06x = 229,171,520.63
  5. Step 5: Solve for x
    x = 229,171,520.63/20,579.06
  6. Step 6: Final answer
    x = 11,136.15

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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.