Home / 14,185.44-21,270.87-6,390

Finding the Fourth Proportional to 14,185.44, 21,270.87 and 6,390

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Solution

The fourth proportional to 14,185.44, 21,270.87 and 6,390 is: 9,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185.44 : 21,270.87 = 6,390 : x
  2. Step 2: Convert to fraction form
    14,185.44/21,270.87 = 6,390/x
  3. Step 3: Cross multiply
    14,185.44x = 21,270.87 × 6,390
  4. Step 4: Simplify right side
    14,185.44x = 135,920,859.30
  5. Step 5: Solve for x
    x = 135,920,859.30/14,185.44
  6. Step 6: Final answer
    x = 9,581.72

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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.