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Finding the Fourth Proportional to 18,915.84, 26,105.04 and 10,960.56

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Solution

The fourth proportional to 18,915.84, 26,105.04 and 10,960.56 is: 15,126.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.84 : 26,105.04 = 10,960.56 : x
  2. Step 2: Convert to fraction form
    18,915.84/26,105.04 = 10,960.56/x
  3. Step 3: Cross multiply
    18,915.84x = 26,105.04 × 10,960.56
  4. Step 4: Simplify right side
    18,915.84x = 286,125,857.22
  5. Step 5: Solve for x
    x = 286,125,857.22/18,915.84
  6. Step 6: Final answer
    x = 15,126.26

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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.