Home / 20,685.35-28,544.58-11,609.87

Finding the Fourth Proportional to 20,685.35, 28,544.58 and 11,609.87

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Solution

The fourth proportional to 20,685.35, 28,544.58 and 11,609.87 is: 16,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.35 : 28,544.58 = 11,609.87 : x
  2. Step 2: Convert to fraction form
    20,685.35/28,544.58 = 11,609.87/x
  3. Step 3: Cross multiply
    20,685.35x = 28,544.58 × 11,609.87
  4. Step 4: Simplify right side
    20,685.35x = 331,398,720.28
  5. Step 5: Solve for x
    x = 331,398,720.28/20,685.35
  6. Step 6: Final answer
    x = 16,020.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.