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Finding the Fourth Proportional to 18,092.70, 24,976.47 and 12,128.26

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Solution

The fourth proportional to 18,092.70, 24,976.47 and 12,128.26 is: 16,742.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,092.70 : 24,976.47 = 12,128.26 : x
  2. Step 2: Convert to fraction form
    18,092.70/24,976.47 = 12,128.26/x
  3. Step 3: Cross multiply
    18,092.70x = 24,976.47 × 12,128.26
  4. Step 4: Simplify right side
    18,092.70x = 302,921,122.04
  5. Step 5: Solve for x
    x = 302,921,122.04/18,092.70
  6. Step 6: Final answer
    x = 16,742.73

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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.