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Finding the Fourth Proportional to 17,125.32, 25,663.84 and 8,109.87

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Solution

The fourth proportional to 17,125.32, 25,663.84 and 8,109.87 is: 12,153.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,125.32 : 25,663.84 = 8,109.87 : x
  2. Step 2: Convert to fraction form
    17,125.32/25,663.84 = 8,109.87/x
  3. Step 3: Cross multiply
    17,125.32x = 25,663.84 × 8,109.87
  4. Step 4: Simplify right side
    17,125.32x = 208,130,433.95
  5. Step 5: Solve for x
    x = 208,130,433.95/17,125.32
  6. Step 6: Final answer
    x = 12,153.37

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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.