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Finding the Fourth Proportional to 43,489.67, 65,230.38 and 13,899.56

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Solution

The fourth proportional to 43,489.67, 65,230.38 and 13,899.56 is: 20,848.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,489.67 : 65,230.38 = 13,899.56 : x
  2. Step 2: Convert to fraction form
    43,489.67/65,230.38 = 13,899.56/x
  3. Step 3: Cross multiply
    43,489.67x = 65,230.38 × 13,899.56
  4. Step 4: Simplify right side
    43,489.67x = 906,673,254.48
  5. Step 5: Solve for x
    x = 906,673,254.48/43,489.67
  6. Step 6: Final answer
    x = 20,848.02

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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.