Home / 15,184.20-20,954.10-8,469.90

Finding the Fourth Proportional to 15,184.20, 20,954.10 and 8,469.90

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Solution

The fourth proportional to 15,184.20, 20,954.10 and 8,469.90 is: 11,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.20 : 20,954.10 = 8,469.90 : x
  2. Step 2: Convert to fraction form
    15,184.20/20,954.10 = 8,469.90/x
  3. Step 3: Cross multiply
    15,184.20x = 20,954.10 × 8,469.90
  4. Step 4: Simplify right side
    15,184.20x = 177,479,131.59
  5. Step 5: Solve for x
    x = 177,479,131.59/15,184.20
  6. Step 6: Final answer
    x = 11,688.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.