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Finding the Fourth Proportional to 19,154.77, 28,728 and 6,005.41

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Solution

The fourth proportional to 19,154.77, 28,728 and 6,005.41 is: 9,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,154.77 : 28,728 = 6,005.41 : x
  2. Step 2: Convert to fraction form
    19,154.77/28,728 = 6,005.41/x
  3. Step 3: Cross multiply
    19,154.77x = 28,728 × 6,005.41
  4. Step 4: Simplify right side
    19,154.77x = 172,523,418.48
  5. Step 5: Solve for x
    x = 172,523,418.48/19,154.77
  6. Step 6: Final answer
    x = 9,006.81

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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.