Home / 20,541.78-30,805.38-7,390.62

Finding the Fourth Proportional to 20,541.78, 30,805.38 and 7,390.62

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Solution

The fourth proportional to 20,541.78, 30,805.38 and 7,390.62 is: 11,083.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.78 : 30,805.38 = 7,390.62 : x
  2. Step 2: Convert to fraction form
    20,541.78/30,805.38 = 7,390.62/x
  3. Step 3: Cross multiply
    20,541.78x = 30,805.38 × 7,390.62
  4. Step 4: Simplify right side
    20,541.78x = 227,670,857.54
  5. Step 5: Solve for x
    x = 227,670,857.54/20,541.78
  6. Step 6: Final answer
    x = 11,083.31

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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.