Home / 21,192.24-31,781.75-7,338

Finding the Fourth Proportional to 21,192.24, 31,781.75 and 7,338

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Solution

The fourth proportional to 21,192.24, 31,781.75 and 7,338 is: 11,004.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.24 : 31,781.75 = 7,338 : x
  2. Step 2: Convert to fraction form
    21,192.24/31,781.75 = 7,338/x
  3. Step 3: Cross multiply
    21,192.24x = 31,781.75 × 7,338
  4. Step 4: Simplify right side
    21,192.24x = 233,214,444.81
  5. Step 5: Solve for x
    x = 233,214,444.81/21,192.24
  6. Step 6: Final answer
    x = 11,004.71

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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.