Home / 20,761.82-31,102.58-17,390.04

Finding the Fourth Proportional to 20,761.82, 31,102.58 and 17,390.04

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Solution

The fourth proportional to 20,761.82, 31,102.58 and 17,390.04 is: 26,051.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.82 : 31,102.58 = 17,390.04 : x
  2. Step 2: Convert to fraction form
    20,761.82/31,102.58 = 17,390.04/x
  3. Step 3: Cross multiply
    20,761.82x = 31,102.58 × 17,390.04
  4. Step 4: Simplify right side
    20,761.82x = 540,875,110.30
  5. Step 5: Solve for x
    x = 540,875,110.30/20,761.82
  6. Step 6: Final answer
    x = 26,051.43

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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.