Home / 20,761.54-31,141.54-11,405.94

Finding the Fourth Proportional to 20,761.54, 31,141.54 and 11,405.94

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Solution

The fourth proportional to 20,761.54, 31,141.54 and 11,405.94 is: 17,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.54 : 31,141.54 = 11,405.94 : x
  2. Step 2: Convert to fraction form
    20,761.54/31,141.54 = 11,405.94/x
  3. Step 3: Cross multiply
    20,761.54x = 31,141.54 × 11,405.94
  4. Step 4: Simplify right side
    20,761.54x = 355,198,536.75
  5. Step 5: Solve for x
    x = 355,198,536.75/20,761.54
  6. Step 6: Final answer
    x = 17,108.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.