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Finding the Fourth Proportional to 19,241.54, 28,865.34 and 8,148.30

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Solution

The fourth proportional to 19,241.54, 28,865.34 and 8,148.30 is: 12,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,241.54 : 28,865.34 = 8,148.30 : x
  2. Step 2: Convert to fraction form
    19,241.54/28,865.34 = 8,148.30/x
  3. Step 3: Cross multiply
    19,241.54x = 28,865.34 × 8,148.30
  4. Step 4: Simplify right side
    19,241.54x = 235,203,449.92
  5. Step 5: Solve for x
    x = 235,203,449.92/19,241.54
  6. Step 6: Final answer
    x = 12,223.73

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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.