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Finding the Fourth Proportional to 17,127, 25,690.50 and 5,440.32

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Solution

The fourth proportional to 17,127, 25,690.50 and 5,440.32 is: 8,160.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,127 : 25,690.50 = 5,440.32 : x
  2. Step 2: Convert to fraction form
    17,127/25,690.50 = 5,440.32/x
  3. Step 3: Cross multiply
    17,127x = 25,690.50 × 5,440.32
  4. Step 4: Simplify right side
    17,127x = 139,764,540.96
  5. Step 5: Solve for x
    x = 139,764,540.96/17,127
  6. Step 6: Final answer
    x = 8,160.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.