Home / 13,418.60-20,135.10-5,628.20

Finding the Fourth Proportional to 13,418.60, 20,135.10 and 5,628.20

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Solution

The fourth proportional to 13,418.60, 20,135.10 and 5,628.20 is: 8,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.60 : 20,135.10 = 5,628.20 : x
  2. Step 2: Convert to fraction form
    13,418.60/20,135.10 = 5,628.20/x
  3. Step 3: Cross multiply
    13,418.60x = 20,135.10 × 5,628.20
  4. Step 4: Simplify right side
    13,418.60x = 113,324,369.82
  5. Step 5: Solve for x
    x = 113,324,369.82/13,418.60
  6. Step 6: Final answer
    x = 8,445.32

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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.