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Finding the Fourth Proportional to 18,312, 27,451.71 and 6,622.62

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Solution

The fourth proportional to 18,312, 27,451.71 and 6,622.62 is: 9,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312 : 27,451.71 = 6,622.62 : x
  2. Step 2: Convert to fraction form
    18,312/27,451.71 = 6,622.62/x
  3. Step 3: Cross multiply
    18,312x = 27,451.71 × 6,622.62
  4. Step 4: Simplify right side
    18,312x = 181,802,243.68
  5. Step 5: Solve for x
    x = 181,802,243.68/18,312
  6. Step 6: Final answer
    x = 9,928.04

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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.