Home / 20,568.06-30,847.28-5,778.40

Finding the Fourth Proportional to 20,568.06, 30,847.28 and 5,778.40

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Solution

The fourth proportional to 20,568.06, 30,847.28 and 5,778.40 is: 8,666.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.06 : 30,847.28 = 5,778.40 : x
  2. Step 2: Convert to fraction form
    20,568.06/30,847.28 = 5,778.40/x
  3. Step 3: Cross multiply
    20,568.06x = 30,847.28 × 5,778.40
  4. Step 4: Simplify right side
    20,568.06x = 178,247,922.75
  5. Step 5: Solve for x
    x = 178,247,922.75/20,568.06
  6. Step 6: Final answer
    x = 8,666.25

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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.