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Finding the Fourth Proportional to 22,305.73, 30,773.92 and 12,738.72

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Solution

The fourth proportional to 22,305.73, 30,773.92 and 12,738.72 is: 17,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,305.73 : 30,773.92 = 12,738.72 : x
  2. Step 2: Convert to fraction form
    22,305.73/30,773.92 = 12,738.72/x
  3. Step 3: Cross multiply
    22,305.73x = 30,773.92 × 12,738.72
  4. Step 4: Simplify right side
    22,305.73x = 392,020,350.18
  5. Step 5: Solve for x
    x = 392,020,350.18/22,305.73
  6. Step 6: Final answer
    x = 17,574.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.