Home / 14,515.82-21,773.60-3,985.79

Finding the Fourth Proportional to 14,515.82, 21,773.60 and 3,985.79

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Solution

The fourth proportional to 14,515.82, 21,773.60 and 3,985.79 is: 5,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.82 : 21,773.60 = 3,985.79 : x
  2. Step 2: Convert to fraction form
    14,515.82/21,773.60 = 3,985.79/x
  3. Step 3: Cross multiply
    14,515.82x = 21,773.60 × 3,985.79
  4. Step 4: Simplify right side
    14,515.82x = 86,784,868.35
  5. Step 5: Solve for x
    x = 86,784,868.35/14,515.82
  6. Step 6: Final answer
    x = 5,978.64

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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.