Home / 20,242.06-30,355.80-8,556.20

Finding the Fourth Proportional to 20,242.06, 30,355.80 and 8,556.20

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Solution

The fourth proportional to 20,242.06, 30,355.80 and 8,556.20 is: 12,831.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.06 : 30,355.80 = 8,556.20 : x
  2. Step 2: Convert to fraction form
    20,242.06/30,355.80 = 8,556.20/x
  3. Step 3: Cross multiply
    20,242.06x = 30,355.80 × 8,556.20
  4. Step 4: Simplify right side
    20,242.06x = 259,730,295.96
  5. Step 5: Solve for x
    x = 259,730,295.96/20,242.06
  6. Step 6: Final answer
    x = 12,831.22

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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.