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Finding the Fourth Proportional to 18,237.88, 27,356.77 and 7,136.79

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Solution

The fourth proportional to 18,237.88, 27,356.77 and 7,136.79 is: 10,705.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,237.88 : 27,356.77 = 7,136.79 : x
  2. Step 2: Convert to fraction form
    18,237.88/27,356.77 = 7,136.79/x
  3. Step 3: Cross multiply
    18,237.88x = 27,356.77 × 7,136.79
  4. Step 4: Simplify right side
    18,237.88x = 195,239,522.57
  5. Step 5: Solve for x
    x = 195,239,522.57/18,237.88
  6. Step 6: Final answer
    x = 10,705.17

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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.