Home / 20,487.36-30,724.21-8,004.15

Finding the Fourth Proportional to 20,487.36, 30,724.21 and 8,004.15

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Solution

The fourth proportional to 20,487.36, 30,724.21 and 8,004.15 is: 12,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.36 : 30,724.21 = 8,004.15 : x
  2. Step 2: Convert to fraction form
    20,487.36/30,724.21 = 8,004.15/x
  3. Step 3: Cross multiply
    20,487.36x = 30,724.21 × 8,004.15
  4. Step 4: Simplify right side
    20,487.36x = 245,921,195.48
  5. Step 5: Solve for x
    x = 245,921,195.48/20,487.36
  6. Step 6: Final answer
    x = 12,003.55

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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.