Home / 13,679.28-20,518.92-5,361.80

Finding the Fourth Proportional to 13,679.28, 20,518.92 and 5,361.80

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Solution

The fourth proportional to 13,679.28, 20,518.92 and 5,361.80 is: 8,042.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.28 : 20,518.92 = 5,361.80 : x
  2. Step 2: Convert to fraction form
    13,679.28/20,518.92 = 5,361.80/x
  3. Step 3: Cross multiply
    13,679.28x = 20,518.92 × 5,361.80
  4. Step 4: Simplify right side
    13,679.28x = 110,018,242.66
  5. Step 5: Solve for x
    x = 110,018,242.66/13,679.28
  6. Step 6: Final answer
    x = 8,042.69

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1.5x scale

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.