Home / 20,288.58-28,034.01-15,613.26

Finding the Fourth Proportional to 20,288.58, 28,034.01 and 15,613.26

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Solution

The fourth proportional to 20,288.58, 28,034.01 and 15,613.26 is: 21,573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.58 : 28,034.01 = 15,613.26 : x
  2. Step 2: Convert to fraction form
    20,288.58/28,034.01 = 15,613.26/x
  3. Step 3: Cross multiply
    20,288.58x = 28,034.01 × 15,613.26
  4. Step 4: Simplify right side
    20,288.58x = 437,702,286.97
  5. Step 5: Solve for x
    x = 437,702,286.97/20,288.58
  6. Step 6: Final answer
    x = 21,573.83

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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.