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Finding the Fourth Proportional to 12,935.88, 19,401.84 and 4,169.88

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Solution

The fourth proportional to 12,935.88, 19,401.84 and 4,169.88 is: 6,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,935.88 : 19,401.84 = 4,169.88 : x
  2. Step 2: Convert to fraction form
    12,935.88/19,401.84 = 4,169.88/x
  3. Step 3: Cross multiply
    12,935.88x = 19,401.84 × 4,169.88
  4. Step 4: Simplify right side
    12,935.88x = 80,903,344.58
  5. Step 5: Solve for x
    x = 80,903,344.58/12,935.88
  6. Step 6: Final answer
    x = 6,254.18

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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.