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Finding the Fourth Proportional to 18,270, 25,202.52 and 12,291.12

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Solution

The fourth proportional to 18,270, 25,202.52 and 12,291.12 is: 16,954.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270 : 25,202.52 = 12,291.12 : x
  2. Step 2: Convert to fraction form
    18,270/25,202.52 = 12,291.12/x
  3. Step 3: Cross multiply
    18,270x = 25,202.52 × 12,291.12
  4. Step 4: Simplify right side
    18,270x = 309,767,197.62
  5. Step 5: Solve for x
    x = 309,767,197.62/18,270
  6. Step 6: Final answer
    x = 16,954.96

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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.