Home / 21,321.52-29,423.01-11,761.39

Finding the Fourth Proportional to 21,321.52, 29,423.01 and 11,761.39

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Solution

The fourth proportional to 21,321.52, 29,423.01 and 11,761.39 is: 16,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.52 : 29,423.01 = 11,761.39 : x
  2. Step 2: Convert to fraction form
    21,321.52/29,423.01 = 11,761.39/x
  3. Step 3: Cross multiply
    21,321.52x = 29,423.01 × 11,761.39
  4. Step 4: Simplify right side
    21,321.52x = 346,055,348.47
  5. Step 5: Solve for x
    x = 346,055,348.47/21,321.52
  6. Step 6: Final answer
    x = 16,230.33

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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.