Home / 13,690.86-20,494.38-8,765.26

Finding the Fourth Proportional to 13,690.86, 20,494.38 and 8,765.26

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Solution

The fourth proportional to 13,690.86, 20,494.38 and 8,765.26 is: 13,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.86 : 20,494.38 = 8,765.26 : x
  2. Step 2: Convert to fraction form
    13,690.86/20,494.38 = 8,765.26/x
  3. Step 3: Cross multiply
    13,690.86x = 20,494.38 × 8,765.26
  4. Step 4: Simplify right side
    13,690.86x = 179,638,569.24
  5. Step 5: Solve for x
    x = 179,638,569.24/13,690.86
  6. Step 6: Final answer
    x = 13,121.06

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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.