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Finding the Fourth Proportional to 19,324.67, 28,986.08 and 11,323.90

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Solution

The fourth proportional to 19,324.67, 28,986.08 and 11,323.90 is: 16,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,324.67 : 28,986.08 = 11,323.90 : x
  2. Step 2: Convert to fraction form
    19,324.67/28,986.08 = 11,323.90/x
  3. Step 3: Cross multiply
    19,324.67x = 28,986.08 × 11,323.90
  4. Step 4: Simplify right side
    19,324.67x = 328,235,342.23
  5. Step 5: Solve for x
    x = 328,235,342.23/19,324.67
  6. Step 6: Final answer
    x = 16,985.30

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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.