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Finding the Fourth Proportional to 14,679.60, 21,981.81 and 8,098.47

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Solution

The fourth proportional to 14,679.60, 21,981.81 and 8,098.47 is: 12,126.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.60 : 21,981.81 = 8,098.47 : x
  2. Step 2: Convert to fraction form
    14,679.60/21,981.81 = 8,098.47/x
  3. Step 3: Cross multiply
    14,679.60x = 21,981.81 × 8,098.47
  4. Step 4: Simplify right side
    14,679.60x = 178,019,028.83
  5. Step 5: Solve for x
    x = 178,019,028.83/14,679.60
  6. Step 6: Final answer
    x = 12,126.97

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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.