Home / 13,816.47-20,707.37-5,909.69

Finding the Fourth Proportional to 13,816.47, 20,707.37 and 5,909.69

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Solution

The fourth proportional to 13,816.47, 20,707.37 and 5,909.69 is: 8,857.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.47 : 20,707.37 = 5,909.69 : x
  2. Step 2: Convert to fraction form
    13,816.47/20,707.37 = 5,909.69/x
  3. Step 3: Cross multiply
    13,816.47x = 20,707.37 × 5,909.69
  4. Step 4: Simplify right side
    13,816.47x = 122,374,181.80
  5. Step 5: Solve for x
    x = 122,374,181.80/13,816.47
  6. Step 6: Final answer
    x = 8,857.12

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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.