Home / 20,786.48-31,192.01-7,648.07

Finding the Fourth Proportional to 20,786.48, 31,192.01 and 7,648.07

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Solution

The fourth proportional to 20,786.48, 31,192.01 and 7,648.07 is: 11,476.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.48 : 31,192.01 = 7,648.07 : x
  2. Step 2: Convert to fraction form
    20,786.48/31,192.01 = 7,648.07/x
  3. Step 3: Cross multiply
    20,786.48x = 31,192.01 × 7,648.07
  4. Step 4: Simplify right side
    20,786.48x = 238,558,675.92
  5. Step 5: Solve for x
    x = 238,558,675.92/20,786.48
  6. Step 6: Final answer
    x = 11,476.63

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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.