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Finding the Fourth Proportional to 18,642.48, 28,002.60 and 10,866.48

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Solution

The fourth proportional to 18,642.48, 28,002.60 and 10,866.48 is: 16,322.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.48 : 28,002.60 = 10,866.48 : x
  2. Step 2: Convert to fraction form
    18,642.48/28,002.60 = 10,866.48/x
  3. Step 3: Cross multiply
    18,642.48x = 28,002.60 × 10,866.48
  4. Step 4: Simplify right side
    18,642.48x = 304,289,692.85
  5. Step 5: Solve for x
    x = 304,289,692.85/18,642.48
  6. Step 6: Final answer
    x = 16,322.38

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