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Finding the Fourth Proportional to 18,642.92, 27,950.71 and 8,776.81

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Solution

The fourth proportional to 18,642.92, 27,950.71 and 8,776.81 is: 13,158.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.92 : 27,950.71 = 8,776.81 : x
  2. Step 2: Convert to fraction form
    18,642.92/27,950.71 = 8,776.81/x
  3. Step 3: Cross multiply
    18,642.92x = 27,950.71 × 8,776.81
  4. Step 4: Simplify right side
    18,642.92x = 245,318,097.03
  5. Step 5: Solve for x
    x = 245,318,097.03/18,642.92
  6. Step 6: Final answer
    x = 13,158.78

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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.