Home / 13,636.29-20,454.46-11,781.80

Finding the Fourth Proportional to 13,636.29, 20,454.46 and 11,781.80

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Solution

The fourth proportional to 13,636.29, 20,454.46 and 11,781.80 is: 17,672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.29 : 20,454.46 = 11,781.80 : x
  2. Step 2: Convert to fraction form
    13,636.29/20,454.46 = 11,781.80/x
  3. Step 3: Cross multiply
    13,636.29x = 20,454.46 × 11,781.80
  4. Step 4: Simplify right side
    13,636.29x = 240,990,301.81
  5. Step 5: Solve for x
    x = 240,990,301.81/13,636.29
  6. Step 6: Final answer
    x = 17,672.71

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1.5x scale

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.