Home / 13,741.60-20,617.80-5,420.20

Finding the Fourth Proportional to 13,741.60, 20,617.80 and 5,420.20

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Solution

The fourth proportional to 13,741.60, 20,617.80 and 5,420.20 is: 8,132.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,741.60 : 20,617.80 = 5,420.20 : x
  2. Step 2: Convert to fraction form
    13,741.60/20,617.80 = 5,420.20/x
  3. Step 3: Cross multiply
    13,741.60x = 20,617.80 × 5,420.20
  4. Step 4: Simplify right side
    13,741.60x = 111,752,599.56
  5. Step 5: Solve for x
    x = 111,752,599.56/13,741.60
  6. Step 6: Final answer
    x = 8,132.43

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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.