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Finding the Fourth Proportional to 18,492, 25,519.05 and 10,108.50

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Solution

The fourth proportional to 18,492, 25,519.05 and 10,108.50 is: 13,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492 : 25,519.05 = 10,108.50 : x
  2. Step 2: Convert to fraction form
    18,492/25,519.05 = 10,108.50/x
  3. Step 3: Cross multiply
    18,492x = 25,519.05 × 10,108.50
  4. Step 4: Simplify right side
    18,492x = 257,959,316.93
  5. Step 5: Solve for x
    x = 257,959,316.93/18,492
  6. Step 6: Final answer
    x = 13,949.78

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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.