Home / 30,411.78-41,997.24-28,755.15

Finding the Fourth Proportional to 30,411.78, 41,997.24 and 28,755.15

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Solution

The fourth proportional to 30,411.78, 41,997.24 and 28,755.15 is: 39,709.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,411.78 : 41,997.24 = 28,755.15 : x
  2. Step 2: Convert to fraction form
    30,411.78/41,997.24 = 28,755.15/x
  3. Step 3: Cross multiply
    30,411.78x = 41,997.24 × 28,755.15
  4. Step 4: Simplify right side
    30,411.78x = 1,207,636,935.79
  5. Step 5: Solve for x
    x = 1,207,636,935.79/30,411.78
  6. Step 6: Final answer
    x = 39,709.51

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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.