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Finding the Fourth Proportional to 15,997.79, 22,076.89 and 8,924.21

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Solution

The fourth proportional to 15,997.79, 22,076.89 and 8,924.21 is: 12,315.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,997.79 : 22,076.89 = 8,924.21 : x
  2. Step 2: Convert to fraction form
    15,997.79/22,076.89 = 8,924.21/x
  3. Step 3: Cross multiply
    15,997.79x = 22,076.89 × 8,924.21
  4. Step 4: Simplify right side
    15,997.79x = 197,018,669.81
  5. Step 5: Solve for x
    x = 197,018,669.81/15,997.79
  6. Step 6: Final answer
    x = 12,315.37

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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.