Home / 20,606.68-28,436.97-11,175.13

Finding the Fourth Proportional to 20,606.68, 28,436.97 and 11,175.13

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Solution

The fourth proportional to 20,606.68, 28,436.97 and 11,175.13 is: 15,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.68 : 28,436.97 = 11,175.13 : x
  2. Step 2: Convert to fraction form
    20,606.68/28,436.97 = 11,175.13/x
  3. Step 3: Cross multiply
    20,606.68x = 28,436.97 × 11,175.13
  4. Step 4: Simplify right side
    20,606.68x = 317,786,836.56
  5. Step 5: Solve for x
    x = 317,786,836.56/20,606.68
  6. Step 6: Final answer
    x = 15,421.54

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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.