Home / 20,451.37-28,222.62-11,376.64

Finding the Fourth Proportional to 20,451.37, 28,222.62 and 11,376.64

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Solution

The fourth proportional to 20,451.37, 28,222.62 and 11,376.64 is: 15,699.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.37 : 28,222.62 = 11,376.64 : x
  2. Step 2: Convert to fraction form
    20,451.37/28,222.62 = 11,376.64/x
  3. Step 3: Cross multiply
    20,451.37x = 28,222.62 × 11,376.64
  4. Step 4: Simplify right side
    20,451.37x = 321,078,587.60
  5. Step 5: Solve for x
    x = 321,078,587.60/20,451.37
  6. Step 6: Final answer
    x = 15,699.61

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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.