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Finding the Fourth Proportional to 12,778.73, 19,153.05 and 5,750.48

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Solution

The fourth proportional to 12,778.73, 19,153.05 and 5,750.48 is: 8,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.73 : 19,153.05 = 5,750.48 : x
  2. Step 2: Convert to fraction form
    12,778.73/19,153.05 = 5,750.48/x
  3. Step 3: Cross multiply
    12,778.73x = 19,153.05 × 5,750.48
  4. Step 4: Simplify right side
    12,778.73x = 110,139,230.96
  5. Step 5: Solve for x
    x = 110,139,230.96/12,778.73
  6. Step 6: Final answer
    x = 8,618.95

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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.