Home / 20,842.30-31,267.93-11,961.73

Finding the Fourth Proportional to 20,842.30, 31,267.93 and 11,961.73

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Solution

The fourth proportional to 20,842.30, 31,267.93 and 11,961.73 is: 17,945.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.30 : 31,267.93 = 11,961.73 : x
  2. Step 2: Convert to fraction form
    20,842.30/31,267.93 = 11,961.73/x
  3. Step 3: Cross multiply
    20,842.30x = 31,267.93 × 11,961.73
  4. Step 4: Simplify right side
    20,842.30x = 374,018,536.32
  5. Step 5: Solve for x
    x = 374,018,536.32/20,842.30
  6. Step 6: Final answer
    x = 17,945.17

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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.