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Finding the Fourth Proportional to 18,142,776, 27,214,164 and 7,505,208

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Solution

The fourth proportional to 18,142,776, 27,214,164 and 7,505,208 is: 11,257,812

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142,776 : 27,214,164 = 7,505,208 : x
  2. Step 2: Convert to fraction form
    18,142,776/27,214,164 = 7,505,208/x
  3. Step 3: Cross multiply
    18,142,776x = 27,214,164 × 7,505,208
  4. Step 4: Simplify right side
    18,142,776x = 204,247,961,366,112
  5. Step 5: Solve for x
    x = 204,247,961,366,112/18,142,776
  6. Step 6: Final answer
    x = 11,257,812

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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.