Home / 20,425.23-28,187.55-11,932.74

Finding the Fourth Proportional to 20,425.23, 28,187.55 and 11,932.74

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Solution

The fourth proportional to 20,425.23, 28,187.55 and 11,932.74 is: 16,467.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.23 : 28,187.55 = 11,932.74 : x
  2. Step 2: Convert to fraction form
    20,425.23/28,187.55 = 11,932.74/x
  3. Step 3: Cross multiply
    20,425.23x = 28,187.55 × 11,932.74
  4. Step 4: Simplify right side
    20,425.23x = 336,354,705.39
  5. Step 5: Solve for x
    x = 336,354,705.39/20,425.23
  6. Step 6: Final answer
    x = 16,467.61

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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.