Home / 20,411.70-30,629.82-8,724.92

Finding the Fourth Proportional to 20,411.70, 30,629.82 and 8,724.92

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Solution

The fourth proportional to 20,411.70, 30,629.82 and 8,724.92 is: 13,092.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.70 : 30,629.82 = 8,724.92 : x
  2. Step 2: Convert to fraction form
    20,411.70/30,629.82 = 8,724.92/x
  3. Step 3: Cross multiply
    20,411.70x = 30,629.82 × 8,724.92
  4. Step 4: Simplify right side
    20,411.70x = 267,242,729.11
  5. Step 5: Solve for x
    x = 267,242,729.11/20,411.70
  6. Step 6: Final answer
    x = 13,092.62

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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.