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Finding the Fourth Proportional to 18,327.76, 27,476.24 and 12,764.68

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Solution

The fourth proportional to 18,327.76, 27,476.24 and 12,764.68 is: 19,136.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,327.76 : 27,476.24 = 12,764.68 : x
  2. Step 2: Convert to fraction form
    18,327.76/27,476.24 = 12,764.68/x
  3. Step 3: Cross multiply
    18,327.76x = 27,476.24 × 12,764.68
  4. Step 4: Simplify right side
    18,327.76x = 350,725,273.82
  5. Step 5: Solve for x
    x = 350,725,273.82/18,327.76
  6. Step 6: Final answer
    x = 19,136.29

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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.