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Finding the Fourth Proportional to 18,122.71, 27,180.99 and 4,972.01

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Solution

The fourth proportional to 18,122.71, 27,180.99 and 4,972.01 is: 7,457.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.71 : 27,180.99 = 4,972.01 : x
  2. Step 2: Convert to fraction form
    18,122.71/27,180.99 = 4,972.01/x
  3. Step 3: Cross multiply
    18,122.71x = 27,180.99 × 4,972.01
  4. Step 4: Simplify right side
    18,122.71x = 135,144,108.62
  5. Step 5: Solve for x
    x = 135,144,108.62/18,122.71
  6. Step 6: Final answer
    x = 7,457.17

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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.