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Finding the Fourth Proportional to 18,486.81, 27,730.19 and 4,446.83

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Solution

The fourth proportional to 18,486.81, 27,730.19 and 4,446.83 is: 6,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.81 : 27,730.19 = 4,446.83 : x
  2. Step 2: Convert to fraction form
    18,486.81/27,730.19 = 4,446.83/x
  3. Step 3: Cross multiply
    18,486.81x = 27,730.19 × 4,446.83
  4. Step 4: Simplify right side
    18,486.81x = 123,311,451.91
  5. Step 5: Solve for x
    x = 123,311,451.91/18,486.81
  6. Step 6: Final answer
    x = 6,670.24

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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.