Home / 13,489.96-20,236.29-3,630.28

Finding the Fourth Proportional to 13,489.96, 20,236.29 and 3,630.28

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Solution

The fourth proportional to 13,489.96, 20,236.29 and 3,630.28 is: 5,445.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.96 : 20,236.29 = 3,630.28 : x
  2. Step 2: Convert to fraction form
    13,489.96/20,236.29 = 3,630.28/x
  3. Step 3: Cross multiply
    13,489.96x = 20,236.29 × 3,630.28
  4. Step 4: Simplify right side
    13,489.96x = 73,463,398.86
  5. Step 5: Solve for x
    x = 73,463,398.86/13,489.96
  6. Step 6: Final answer
    x = 5,445.78

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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.