Home / 26,781.72-40,197.42-13,643.93

Finding the Fourth Proportional to 26,781.72, 40,197.42 and 13,643.93

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Solution

The fourth proportional to 26,781.72, 40,197.42 and 13,643.93 is: 20,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.72 : 40,197.42 = 13,643.93 : x
  2. Step 2: Convert to fraction form
    26,781.72/40,197.42 = 13,643.93/x
  3. Step 3: Cross multiply
    26,781.72x = 40,197.42 × 13,643.93
  4. Step 4: Simplify right side
    26,781.72x = 548,450,583.67
  5. Step 5: Solve for x
    x = 548,450,583.67/26,781.72
  6. Step 6: Final answer
    x = 20,478.54

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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.