Home / 18,991.48-28,492.17-11,100.73

Finding the Fourth Proportional to 18,991.48, 28,492.17 and 11,100.73

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Solution

The fourth proportional to 18,991.48, 28,492.17 and 11,100.73 is: 16,653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.48 : 28,492.17 = 11,100.73 : x
  2. Step 2: Convert to fraction form
    18,991.48/28,492.17 = 11,100.73/x
  3. Step 3: Cross multiply
    18,991.48x = 28,492.17 × 11,100.73
  4. Step 4: Simplify right side
    18,991.48x = 316,283,963.53
  5. Step 5: Solve for x
    x = 316,283,963.53/18,991.48
  6. Step 6: Final answer
    x = 16,653.99

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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.