Home / 8,989.82-13,470.12-6,380

Finding the Fourth Proportional to 8,989.82, 13,470.12 and 6,380

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Solution

The fourth proportional to 8,989.82, 13,470.12 and 6,380 is: 9,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.82 : 13,470.12 = 6,380 : x
  2. Step 2: Convert to fraction form
    8,989.82/13,470.12 = 6,380/x
  3. Step 3: Cross multiply
    8,989.82x = 13,470.12 × 6,380
  4. Step 4: Simplify right side
    8,989.82x = 85,939,365.60
  5. Step 5: Solve for x
    x = 85,939,365.60/8,989.82
  6. Step 6: Final answer
    x = 9,559.63

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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.