Home / 22,172.44-30,601.90-12,740.80

Finding the Fourth Proportional to 22,172.44, 30,601.90 and 12,740.80

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Solution

The fourth proportional to 22,172.44, 30,601.90 and 12,740.80 is: 17,584.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,172.44 : 30,601.90 = 12,740.80 : x
  2. Step 2: Convert to fraction form
    22,172.44/30,601.90 = 12,740.80/x
  3. Step 3: Cross multiply
    22,172.44x = 30,601.90 × 12,740.80
  4. Step 4: Simplify right side
    22,172.44x = 389,892,687.52
  5. Step 5: Solve for x
    x = 389,892,687.52/22,172.44
  6. Step 6: Final answer
    x = 17,584.56

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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.