Home / 20,650.32-28,496.84-11,698.61

Finding the Fourth Proportional to 20,650.32, 28,496.84 and 11,698.61

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Solution

The fourth proportional to 20,650.32, 28,496.84 and 11,698.61 is: 16,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.32 : 28,496.84 = 11,698.61 : x
  2. Step 2: Convert to fraction form
    20,650.32/28,496.84 = 11,698.61/x
  3. Step 3: Cross multiply
    20,650.32x = 28,496.84 × 11,698.61
  4. Step 4: Simplify right side
    20,650.32x = 333,373,216.42
  5. Step 5: Solve for x
    x = 333,373,216.42/20,650.32
  6. Step 6: Final answer
    x = 16,143.73

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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.