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Finding the Fourth Proportional to 18,105.66, 27,159.30 and 4,957.74

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Solution

The fourth proportional to 18,105.66, 27,159.30 and 4,957.74 is: 7,436.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.66 : 27,159.30 = 4,957.74 : x
  2. Step 2: Convert to fraction form
    18,105.66/27,159.30 = 4,957.74/x
  3. Step 3: Cross multiply
    18,105.66x = 27,159.30 × 4,957.74
  4. Step 4: Simplify right side
    18,105.66x = 134,648,747.98
  5. Step 5: Solve for x
    x = 134,648,747.98/18,105.66
  6. Step 6: Final answer
    x = 7,436.83

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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.