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Finding the Fourth Proportional to 19,197.38, 28,789.16 and 7,354.49

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Solution

The fourth proportional to 19,197.38, 28,789.16 and 7,354.49 is: 11,029.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,197.38 : 28,789.16 = 7,354.49 : x
  2. Step 2: Convert to fraction form
    19,197.38/28,789.16 = 7,354.49/x
  3. Step 3: Cross multiply
    19,197.38x = 28,789.16 × 7,354.49
  4. Step 4: Simplify right side
    19,197.38x = 211,729,408.61
  5. Step 5: Solve for x
    x = 211,729,408.61/19,197.38
  6. Step 6: Final answer
    x = 11,029.08

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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.