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Finding the Fourth Proportional to 19,324.40, 28,997.40 and 8,229.20

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Solution

The fourth proportional to 19,324.40, 28,997.40 and 8,229.20 is: 12,348.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,324.40 : 28,997.40 = 8,229.20 : x
  2. Step 2: Convert to fraction form
    19,324.40/28,997.40 = 8,229.20/x
  3. Step 3: Cross multiply
    19,324.40x = 28,997.40 × 8,229.20
  4. Step 4: Simplify right side
    19,324.40x = 238,625,404.08
  5. Step 5: Solve for x
    x = 238,625,404.08/19,324.40
  6. Step 6: Final answer
    x = 12,348.40

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1.5x scale

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.