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Finding the Fourth Proportional to 13,182, 19,773.02 and 5,390.80

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Solution

The fourth proportional to 13,182, 19,773.02 and 5,390.80 is: 8,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182 : 19,773.02 = 5,390.80 : x
  2. Step 2: Convert to fraction form
    13,182/19,773.02 = 5,390.80/x
  3. Step 3: Cross multiply
    13,182x = 19,773.02 × 5,390.80
  4. Step 4: Simplify right side
    13,182x = 106,592,396.22
  5. Step 5: Solve for x
    x = 106,592,396.22/13,182
  6. Step 6: Final answer
    x = 8,086.21

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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.