Home / 13,782.78-20,681.00-5,462.61

Finding the Fourth Proportional to 13,782.78, 20,681.00 and 5,462.61

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Solution

The fourth proportional to 13,782.78, 20,681.00 and 5,462.61 is: 8,196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.78 : 20,681.00 = 5,462.61 : x
  2. Step 2: Convert to fraction form
    13,782.78/20,681.00 = 5,462.61/x
  3. Step 3: Cross multiply
    13,782.78x = 20,681.00 × 5,462.61
  4. Step 4: Simplify right side
    13,782.78x = 112,972,241.92
  5. Step 5: Solve for x
    x = 112,972,241.92/13,782.78
  6. Step 6: Final answer
    x = 8,196.62

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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.