Home / 20,848.80-31,262.40-7,694.40

Finding the Fourth Proportional to 20,848.80, 31,262.40 and 7,694.40

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Solution

The fourth proportional to 20,848.80, 31,262.40 and 7,694.40 is: 11,537.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.80 : 31,262.40 = 7,694.40 : x
  2. Step 2: Convert to fraction form
    20,848.80/31,262.40 = 7,694.40/x
  3. Step 3: Cross multiply
    20,848.80x = 31,262.40 × 7,694.40
  4. Step 4: Simplify right side
    20,848.80x = 240,545,410.56
  5. Step 5: Solve for x
    x = 240,545,410.56/20,848.80
  6. Step 6: Final answer
    x = 11,537.61

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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.