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Finding the Fourth Proportional to 18,010, 27,044.88 and 11,128.24

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Solution

The fourth proportional to 18,010, 27,044.88 and 11,128.24 is: 16,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,010 : 27,044.88 = 11,128.24 : x
  2. Step 2: Convert to fraction form
    18,010/27,044.88 = 11,128.24/x
  3. Step 3: Cross multiply
    18,010x = 27,044.88 × 11,128.24
  4. Step 4: Simplify right side
    18,010x = 300,961,915.41
  5. Step 5: Solve for x
    x = 300,961,915.41/18,010
  6. Step 6: Final answer
    x = 16,710.82

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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.