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Finding the Fourth Proportional to 12,550.95, 18,822.30 and 4,228.73

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Solution

The fourth proportional to 12,550.95, 18,822.30 and 4,228.73 is: 6,341.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,550.95 : 18,822.30 = 4,228.73 : x
  2. Step 2: Convert to fraction form
    12,550.95/18,822.30 = 4,228.73/x
  3. Step 3: Cross multiply
    12,550.95x = 18,822.30 × 4,228.73
  4. Step 4: Simplify right side
    12,550.95x = 79,594,330.57
  5. Step 5: Solve for x
    x = 79,594,330.57/12,550.95
  6. Step 6: Final answer
    x = 6,341.70

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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.