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Finding the Fourth Proportional to 18,838.16, 25,995.36 and 10,454

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Solution

The fourth proportional to 18,838.16, 25,995.36 and 10,454 is: 14,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.16 : 25,995.36 = 10,454 : x
  2. Step 2: Convert to fraction form
    18,838.16/25,995.36 = 10,454/x
  3. Step 3: Cross multiply
    18,838.16x = 25,995.36 × 10,454
  4. Step 4: Simplify right side
    18,838.16x = 271,755,493.44
  5. Step 5: Solve for x
    x = 271,755,493.44/18,838.16
  6. Step 6: Final answer
    x = 14,425.80

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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.