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Finding the Fourth Proportional to 18,396.47, 27,603.18 and 14,230.22

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Solution

The fourth proportional to 18,396.47, 27,603.18 and 14,230.22 is: 21,351.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.47 : 27,603.18 = 14,230.22 : x
  2. Step 2: Convert to fraction form
    18,396.47/27,603.18 = 14,230.22/x
  3. Step 3: Cross multiply
    18,396.47x = 27,603.18 × 14,230.22
  4. Step 4: Simplify right side
    18,396.47x = 392,799,324.10
  5. Step 5: Solve for x
    x = 392,799,324.10/18,396.47
  6. Step 6: Final answer
    x = 21,351.89

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1.5x scale

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.