Home / 20,243.47-30,357.91-8,557.60

Finding the Fourth Proportional to 20,243.47, 30,357.91 and 8,557.60

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Solution

The fourth proportional to 20,243.47, 30,357.91 and 8,557.60 is: 12,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.47 : 30,357.91 = 8,557.60 : x
  2. Step 2: Convert to fraction form
    20,243.47/30,357.91 = 8,557.60/x
  3. Step 3: Cross multiply
    20,243.47x = 30,357.91 × 8,557.60
  4. Step 4: Simplify right side
    20,243.47x = 259,790,850.62
  5. Step 5: Solve for x
    x = 259,790,850.62/20,243.47
  6. Step 6: Final answer
    x = 12,833.32

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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.