Home / 21,227.91-31,837.77-20,174.24

Finding the Fourth Proportional to 21,227.91, 31,837.77 and 20,174.24

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Solution

The fourth proportional to 21,227.91, 31,837.77 and 20,174.24 is: 30,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.91 : 31,837.77 = 20,174.24 : x
  2. Step 2: Convert to fraction form
    21,227.91/31,837.77 = 20,174.24/x
  3. Step 3: Cross multiply
    21,227.91x = 31,837.77 × 20,174.24
  4. Step 4: Simplify right side
    21,227.91x = 642,302,653.86
  5. Step 5: Solve for x
    x = 642,302,653.86/21,227.91
  6. Step 6: Final answer
    x = 30,257.46

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1.5x scale

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.