Home / 43,420.29-65,130.42-12,255.54

Finding the Fourth Proportional to 43,420.29, 65,130.42 and 12,255.54

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Solution

The fourth proportional to 43,420.29, 65,130.42 and 12,255.54 is: 18,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,420.29 : 65,130.42 = 12,255.54 : x
  2. Step 2: Convert to fraction form
    43,420.29/65,130.42 = 12,255.54/x
  3. Step 3: Cross multiply
    43,420.29x = 65,130.42 × 12,255.54
  4. Step 4: Simplify right side
    43,420.29x = 798,208,269.25
  5. Step 5: Solve for x
    x = 798,208,269.25/43,420.29
  6. Step 6: Final answer
    x = 18,383.30

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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.