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Finding the Fourth Proportional to 43,489.96, 65,245.44 and 13,503.28

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Solution

The fourth proportional to 43,489.96, 65,245.44 and 13,503.28 is: 20,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,489.96 : 65,245.44 = 13,503.28 : x
  2. Step 2: Convert to fraction form
    43,489.96/65,245.44 = 13,503.28/x
  3. Step 3: Cross multiply
    43,489.96x = 65,245.44 × 13,503.28
  4. Step 4: Simplify right side
    43,489.96x = 881,027,445.04
  5. Step 5: Solve for x
    x = 881,027,445.04/43,489.96
  6. Step 6: Final answer
    x = 20,258.18

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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.