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Finding the Fourth Proportional to 25,953.78, 38,906.04 and 8,411.28

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Solution

The fourth proportional to 25,953.78, 38,906.04 and 8,411.28 is: 12,608.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,953.78 : 38,906.04 = 8,411.28 : x
  2. Step 2: Convert to fraction form
    25,953.78/38,906.04 = 8,411.28/x
  3. Step 3: Cross multiply
    25,953.78x = 38,906.04 × 8,411.28
  4. Step 4: Simplify right side
    25,953.78x = 327,249,596.13
  5. Step 5: Solve for x
    x = 327,249,596.13/25,953.78
  6. Step 6: Final answer
    x = 12,608.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.