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Finding the Fourth Proportional to 18,632.46, 27,948.71 and 4,781.46

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Solution

The fourth proportional to 18,632.46, 27,948.71 and 4,781.46 is: 7,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.46 : 27,948.71 = 4,781.46 : x
  2. Step 2: Convert to fraction form
    18,632.46/27,948.71 = 4,781.46/x
  3. Step 3: Cross multiply
    18,632.46x = 27,948.71 × 4,781.46
  4. Step 4: Simplify right side
    18,632.46x = 133,635,638.92
  5. Step 5: Solve for x
    x = 133,635,638.92/18,632.46
  6. Step 6: Final answer
    x = 7,172.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.