Home / 21,717.57-29,973.47-13,760.54

Finding the Fourth Proportional to 21,717.57, 29,973.47 and 13,760.54

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Solution

The fourth proportional to 21,717.57, 29,973.47 and 13,760.54 is: 18,991.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.57 : 29,973.47 = 13,760.54 : x
  2. Step 2: Convert to fraction form
    21,717.57/29,973.47 = 13,760.54/x
  3. Step 3: Cross multiply
    21,717.57x = 29,973.47 × 13,760.54
  4. Step 4: Simplify right side
    21,717.57x = 412,451,132.87
  5. Step 5: Solve for x
    x = 412,451,132.87/21,717.57
  6. Step 6: Final answer
    x = 18,991.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.