Home / 20,258.54-30,391.05-8,571.86

Finding the Fourth Proportional to 20,258.54, 30,391.05 and 8,571.86

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Solution

The fourth proportional to 20,258.54, 30,391.05 and 8,571.86 is: 12,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.54 : 30,391.05 = 8,571.86 : x
  2. Step 2: Convert to fraction form
    20,258.54/30,391.05 = 8,571.86/x
  3. Step 3: Cross multiply
    20,258.54x = 30,391.05 × 8,571.86
  4. Step 4: Simplify right side
    20,258.54x = 260,507,673.90
  5. Step 5: Solve for x
    x = 260,507,673.90/20,258.54
  6. Step 6: Final answer
    x = 12,859.16

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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.