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Finding the Fourth Proportional to 15,893.70, 21,935.25 and 8,822.40

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Solution

The fourth proportional to 15,893.70, 21,935.25 and 8,822.40 is: 12,175.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,893.70 : 21,935.25 = 8,822.40 : x
  2. Step 2: Convert to fraction form
    15,893.70/21,935.25 = 8,822.40/x
  3. Step 3: Cross multiply
    15,893.70x = 21,935.25 × 8,822.40
  4. Step 4: Simplify right side
    15,893.70x = 193,521,549.60
  5. Step 5: Solve for x
    x = 193,521,549.60/15,893.70
  6. Step 6: Final answer
    x = 12,175.99

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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.