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Finding the Fourth Proportional to 18,297, 25,249.86 and 9,913.50

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Solution

The fourth proportional to 18,297, 25,249.86 and 9,913.50 is: 13,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297 : 25,249.86 = 9,913.50 : x
  2. Step 2: Convert to fraction form
    18,297/25,249.86 = 9,913.50/x
  3. Step 3: Cross multiply
    18,297x = 25,249.86 × 9,913.50
  4. Step 4: Simplify right side
    18,297x = 250,314,487.11
  5. Step 5: Solve for x
    x = 250,314,487.11/18,297
  6. Step 6: Final answer
    x = 13,680.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.