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Finding the Fourth Proportional to 18,751.11, 28,137.93 and 7,504.44

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Solution

The fourth proportional to 18,751.11, 28,137.93 and 7,504.44 is: 11,261.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.11 : 28,137.93 = 7,504.44 : x
  2. Step 2: Convert to fraction form
    18,751.11/28,137.93 = 7,504.44/x
  3. Step 3: Cross multiply
    18,751.11x = 28,137.93 × 7,504.44
  4. Step 4: Simplify right side
    18,751.11x = 211,159,407.41
  5. Step 5: Solve for x
    x = 211,159,407.41/18,751.11
  6. Step 6: Final answer
    x = 11,261.17

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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.