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Finding the Fourth Proportional to 14,679.89, 20,258.13 and 8,306.43

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Solution

The fourth proportional to 14,679.89, 20,258.13 and 8,306.43 is: 11,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.89 : 20,258.13 = 8,306.43 : x
  2. Step 2: Convert to fraction form
    14,679.89/20,258.13 = 8,306.43/x
  3. Step 3: Cross multiply
    14,679.89x = 20,258.13 × 8,306.43
  4. Step 4: Simplify right side
    14,679.89x = 168,272,738.78
  5. Step 5: Solve for x
    x = 168,272,738.78/14,679.89
  6. Step 6: Final answer
    x = 11,462.80

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