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Finding the Fourth Proportional to 19,018.68, 28,531.11 and 5,868

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Solution

The fourth proportional to 19,018.68, 28,531.11 and 5,868 is: 8,802.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,018.68 : 28,531.11 = 5,868 : x
  2. Step 2: Convert to fraction form
    19,018.68/28,531.11 = 5,868/x
  3. Step 3: Cross multiply
    19,018.68x = 28,531.11 × 5,868
  4. Step 4: Simplify right side
    19,018.68x = 167,420,553.48
  5. Step 5: Solve for x
    x = 167,420,553.48/19,018.68
  6. Step 6: Final answer
    x = 8,802.95

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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.