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Finding the Fourth Proportional to 18,862.84, 28,269.66 and 10,542.52

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Solution

The fourth proportional to 18,862.84, 28,269.66 and 10,542.52 is: 15,800.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.84 : 28,269.66 = 10,542.52 : x
  2. Step 2: Convert to fraction form
    18,862.84/28,269.66 = 10,542.52/x
  3. Step 3: Cross multiply
    18,862.84x = 28,269.66 × 10,542.52
  4. Step 4: Simplify right side
    18,862.84x = 298,033,455.94
  5. Step 5: Solve for x
    x = 298,033,455.94/18,862.84
  6. Step 6: Final answer
    x = 15,800.03

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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.