Home / 22,161.88-30,583.20-12,730.60

Finding the Fourth Proportional to 22,161.88, 30,583.20 and 12,730.60

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Solution

The fourth proportional to 22,161.88, 30,583.20 and 12,730.60 is: 17,568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.88 : 30,583.20 = 12,730.60 : x
  2. Step 2: Convert to fraction form
    22,161.88/30,583.20 = 12,730.60/x
  3. Step 3: Cross multiply
    22,161.88x = 30,583.20 × 12,730.60
  4. Step 4: Simplify right side
    22,161.88x = 389,342,485.92
  5. Step 5: Solve for x
    x = 389,342,485.92/22,161.88
  6. Step 6: Final answer
    x = 17,568.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.