Home / 13,726.31-20,590.30-3,866.43

Finding the Fourth Proportional to 13,726.31, 20,590.30 and 3,866.43

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Solution

The fourth proportional to 13,726.31, 20,590.30 and 3,866.43 is: 5,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.31 : 20,590.30 = 3,866.43 : x
  2. Step 2: Convert to fraction form
    13,726.31/20,590.30 = 3,866.43/x
  3. Step 3: Cross multiply
    13,726.31x = 20,590.30 × 3,866.43
  4. Step 4: Simplify right side
    13,726.31x = 79,611,035.68
  5. Step 5: Solve for x
    x = 79,611,035.68/13,726.31
  6. Step 6: Final answer
    x = 5,799.89

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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.