Home / 20,727.64-28,596.54-13,279.96

Finding the Fourth Proportional to 20,727.64, 28,596.54 and 13,279.96

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Solution

The fourth proportional to 20,727.64, 28,596.54 and 13,279.96 is: 18,321.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.64 : 28,596.54 = 13,279.96 : x
  2. Step 2: Convert to fraction form
    20,727.64/28,596.54 = 13,279.96/x
  3. Step 3: Cross multiply
    20,727.64x = 28,596.54 × 13,279.96
  4. Step 4: Simplify right side
    20,727.64x = 379,760,907.34
  5. Step 5: Solve for x
    x = 379,760,907.34/20,727.64
  6. Step 6: Final answer
    x = 18,321.47

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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.