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Finding the Fourth Proportional to 18,131.52, 25,021.80 and 10,175.52

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Solution

The fourth proportional to 18,131.52, 25,021.80 and 10,175.52 is: 14,042.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.52 : 25,021.80 = 10,175.52 : x
  2. Step 2: Convert to fraction form
    18,131.52/25,021.80 = 10,175.52/x
  3. Step 3: Cross multiply
    18,131.52x = 25,021.80 × 10,175.52
  4. Step 4: Simplify right side
    18,131.52x = 254,609,826.34
  5. Step 5: Solve for x
    x = 254,609,826.34/18,131.52
  6. Step 6: Final answer
    x = 14,042.39

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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.