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Finding the Fourth Proportional to 18,516.65, 27,774.83 and 7,423.17

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Solution

The fourth proportional to 18,516.65, 27,774.83 and 7,423.17 is: 11,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.65 : 27,774.83 = 7,423.17 : x
  2. Step 2: Convert to fraction form
    18,516.65/27,774.83 = 7,423.17/x
  3. Step 3: Cross multiply
    18,516.65x = 27,774.83 × 7,423.17
  4. Step 4: Simplify right side
    18,516.65x = 206,177,284.81
  5. Step 5: Solve for x
    x = 206,177,284.81/18,516.65
  6. Step 6: Final answer
    x = 11,134.70

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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.