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Finding the Fourth Proportional to 22,081, 30,472.26 and 12,145

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Solution

The fourth proportional to 22,081, 30,472.26 and 12,145 is: 16,760.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,081 : 30,472.26 = 12,145 : x
  2. Step 2: Convert to fraction form
    22,081/30,472.26 = 12,145/x
  3. Step 3: Cross multiply
    22,081x = 30,472.26 × 12,145
  4. Step 4: Simplify right side
    22,081x = 370,085,597.70
  5. Step 5: Solve for x
    x = 370,085,597.70/22,081
  6. Step 6: Final answer
    x = 16,760.36

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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.