Home / 19,721.43-29,564.50-7,238.56

Finding the Fourth Proportional to 19,721.43, 29,564.50 and 7,238.56

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Solution

The fourth proportional to 19,721.43, 29,564.50 and 7,238.56 is: 10,851.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.43 : 29,564.50 = 7,238.56 : x
  2. Step 2: Convert to fraction form
    19,721.43/29,564.50 = 7,238.56/x
  3. Step 3: Cross multiply
    19,721.43x = 29,564.50 × 7,238.56
  4. Step 4: Simplify right side
    19,721.43x = 214,004,407.12
  5. Step 5: Solve for x
    x = 214,004,407.12/19,721.43
  6. Step 6: Final answer
    x = 10,851.36

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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.