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Finding the Fourth Proportional to 18,147.80, 25,044 and 10,190

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Solution

The fourth proportional to 18,147.80, 25,044 and 10,190 is: 14,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.80 : 25,044 = 10,190 : x
  2. Step 2: Convert to fraction form
    18,147.80/25,044 = 10,190/x
  3. Step 3: Cross multiply
    18,147.80x = 25,044 × 10,190
  4. Step 4: Simplify right side
    18,147.80x = 255,198,360
  5. Step 5: Solve for x
    x = 255,198,360/18,147.80
  6. Step 6: Final answer
    x = 14,062.22

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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.