Home / 26,558.19-39,861.92-13,419.78

Finding the Fourth Proportional to 26,558.19, 39,861.92 and 13,419.78

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Solution

The fourth proportional to 26,558.19, 39,861.92 and 13,419.78 is: 20,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,558.19 : 39,861.92 = 13,419.78 : x
  2. Step 2: Convert to fraction form
    26,558.19/39,861.92 = 13,419.78/x
  3. Step 3: Cross multiply
    26,558.19x = 39,861.92 × 13,419.78
  4. Step 4: Simplify right side
    26,558.19x = 534,938,129.68
  5. Step 5: Solve for x
    x = 534,938,129.68/26,558.19
  6. Step 6: Final answer
    x = 20,142.12

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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.