Home / 43,398.60-65,110.36-13,821

Finding the Fourth Proportional to 43,398.60, 65,110.36 and 13,821

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Solution

The fourth proportional to 43,398.60, 65,110.36 and 13,821 is: 20,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,398.60 : 65,110.36 = 13,821 : x
  2. Step 2: Convert to fraction form
    43,398.60/65,110.36 = 13,821/x
  3. Step 3: Cross multiply
    43,398.60x = 65,110.36 × 13,821
  4. Step 4: Simplify right side
    43,398.60x = 899,890,285.56
  5. Step 5: Solve for x
    x = 899,890,285.56/43,398.60
  6. Step 6: Final answer
    x = 20,735.47

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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.