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Finding the Fourth Proportional to 25,405.92, 35,027.64 and 19,731.06

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Solution

The fourth proportional to 25,405.92, 35,027.64 and 19,731.06 is: 27,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,405.92 : 35,027.64 = 19,731.06 : x
  2. Step 2: Convert to fraction form
    25,405.92/35,027.64 = 19,731.06/x
  3. Step 3: Cross multiply
    25,405.92x = 35,027.64 × 19,731.06
  4. Step 4: Simplify right side
    25,405.92x = 691,132,466.50
  5. Step 5: Solve for x
    x = 691,132,466.50/25,405.92
  6. Step 6: Final answer
    x = 27,203.60

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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.