Home / 21,223.48-29,288.10-11,791.80

Finding the Fourth Proportional to 21,223.48, 29,288.10 and 11,791.80

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Solution

The fourth proportional to 21,223.48, 29,288.10 and 11,791.80 is: 16,272.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.48 : 29,288.10 = 11,791.80 : x
  2. Step 2: Convert to fraction form
    21,223.48/29,288.10 = 11,791.80/x
  3. Step 3: Cross multiply
    21,223.48x = 29,288.10 × 11,791.80
  4. Step 4: Simplify right side
    21,223.48x = 345,359,417.58
  5. Step 5: Solve for x
    x = 345,359,417.58/21,223.48
  6. Step 6: Final answer
    x = 16,272.52

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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.