Home / 20,242.47-30,356.42-8,556.60

Finding the Fourth Proportional to 20,242.47, 30,356.42 and 8,556.60

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Solution

The fourth proportional to 20,242.47, 30,356.42 and 8,556.60 is: 12,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.47 : 30,356.42 = 8,556.60 : x
  2. Step 2: Convert to fraction form
    20,242.47/30,356.42 = 8,556.60/x
  3. Step 3: Cross multiply
    20,242.47x = 30,356.42 × 8,556.60
  4. Step 4: Simplify right side
    20,242.47x = 259,747,814.43
  5. Step 5: Solve for x
    x = 259,747,814.43/20,242.47
  6. Step 6: Final answer
    x = 12,831.82

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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.