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Finding the Fourth Proportional to 15,617.43, 21,546.77 and 8,898.30

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Solution

The fourth proportional to 15,617.43, 21,546.77 and 8,898.30 is: 12,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.43 : 21,546.77 = 8,898.30 : x
  2. Step 2: Convert to fraction form
    15,617.43/21,546.77 = 8,898.30/x
  3. Step 3: Cross multiply
    15,617.43x = 21,546.77 × 8,898.30
  4. Step 4: Simplify right side
    15,617.43x = 191,729,579.00
  5. Step 5: Solve for x
    x = 191,729,579.00/15,617.43
  6. Step 6: Final answer
    x = 12,276.64

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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.