Home / 20,707.88-28,583.32-11,761.34

Finding the Fourth Proportional to 20,707.88, 28,583.32 and 11,761.34

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Solution

The fourth proportional to 20,707.88, 28,583.32 and 11,761.34 is: 16,234.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.88 : 28,583.32 = 11,761.34 : x
  2. Step 2: Convert to fraction form
    20,707.88/28,583.32 = 11,761.34/x
  3. Step 3: Cross multiply
    20,707.88x = 28,583.32 × 11,761.34
  4. Step 4: Simplify right side
    20,707.88x = 336,178,144.85
  5. Step 5: Solve for x
    x = 336,178,144.85/20,707.88
  6. Step 6: Final answer
    x = 16,234.31

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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.