Home / 15,764.68-21,786.60-12,927.64

Finding the Fourth Proportional to 15,764.68, 21,786.60 and 12,927.64

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Solution

The fourth proportional to 15,764.68, 21,786.60 and 12,927.64 is: 17,865.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.68 : 21,786.60 = 12,927.64 : x
  2. Step 2: Convert to fraction form
    15,764.68/21,786.60 = 12,927.64/x
  3. Step 3: Cross multiply
    15,764.68x = 21,786.60 × 12,927.64
  4. Step 4: Simplify right side
    15,764.68x = 281,649,321.62
  5. Step 5: Solve for x
    x = 281,649,321.62/15,764.68
  6. Step 6: Final answer
    x = 17,865.84

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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.