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Finding the Fourth Proportional to 29,111.44, 40,173.78 and 15,863.44

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Solution

The fourth proportional to 29,111.44, 40,173.78 and 15,863.44 is: 21,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,111.44 : 40,173.78 = 15,863.44 : x
  2. Step 2: Convert to fraction form
    29,111.44/40,173.78 = 15,863.44/x
  3. Step 3: Cross multiply
    29,111.44x = 40,173.78 × 15,863.44
  4. Step 4: Simplify right side
    29,111.44x = 637,294,348.60
  5. Step 5: Solve for x
    x = 637,294,348.60/29,111.44
  6. Step 6: Final answer
    x = 21,891.54

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1.5x scale

Why These Related Problems?

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