Home / 27,143.82-40,778.10-19,265.90

Finding the Fourth Proportional to 27,143.82, 40,778.10 and 19,265.90

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Solution

The fourth proportional to 27,143.82, 40,778.10 and 19,265.90 is: 28,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.82 : 40,778.10 = 19,265.90 : x
  2. Step 2: Convert to fraction form
    27,143.82/40,778.10 = 19,265.90/x
  3. Step 3: Cross multiply
    27,143.82x = 40,778.10 × 19,265.90
  4. Step 4: Simplify right side
    27,143.82x = 785,626,592.90
  5. Step 5: Solve for x
    x = 785,626,592.90/27,143.82
  6. Step 6: Final answer
    x = 28,943.11

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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.