Home / 21,150.82-31,726.27-8,668.52

Finding the Fourth Proportional to 21,150.82, 31,726.27 and 8,668.52

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Solution

The fourth proportional to 21,150.82, 31,726.27 and 8,668.52 is: 13,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.82 : 31,726.27 = 8,668.52 : x
  2. Step 2: Convert to fraction form
    21,150.82/31,726.27 = 8,668.52/x
  3. Step 3: Cross multiply
    21,150.82x = 31,726.27 × 8,668.52
  4. Step 4: Simplify right side
    21,150.82x = 275,019,806.02
  5. Step 5: Solve for x
    x = 275,019,806.02/21,150.82
  6. Step 6: Final answer
    x = 13,002.80

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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.