Home / 21,321.93-29,422.87-11,761.89

Finding the Fourth Proportional to 21,321.93, 29,422.87 and 11,761.89

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Solution

The fourth proportional to 21,321.93, 29,422.87 and 11,761.89 is: 16,230.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.93 : 29,422.87 = 11,761.89 : x
  2. Step 2: Convert to fraction form
    21,321.93/29,422.87 = 11,761.89/x
  3. Step 3: Cross multiply
    21,321.93x = 29,422.87 × 11,761.89
  4. Step 4: Simplify right side
    21,321.93x = 346,068,560.42
  5. Step 5: Solve for x
    x = 346,068,560.42/21,321.93
  6. Step 6: Final answer
    x = 16,230.64

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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.