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Finding the Fourth Proportional to 14,291.84, 21,439.08 and 3,761.84

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Solution

The fourth proportional to 14,291.84, 21,439.08 and 3,761.84 is: 5,643.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,291.84 : 21,439.08 = 3,761.84 : x
  2. Step 2: Convert to fraction form
    14,291.84/21,439.08 = 3,761.84/x
  3. Step 3: Cross multiply
    14,291.84x = 21,439.08 × 3,761.84
  4. Step 4: Simplify right side
    14,291.84x = 80,650,442.30
  5. Step 5: Solve for x
    x = 80,650,442.30/14,291.84
  6. Step 6: Final answer
    x = 5,643.11

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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.