Home / 21,404.05-29,537.66-11,972.61

Finding the Fourth Proportional to 21,404.05, 29,537.66 and 11,972.61

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Solution

The fourth proportional to 21,404.05, 29,537.66 and 11,972.61 is: 16,522.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.05 : 29,537.66 = 11,972.61 : x
  2. Step 2: Convert to fraction form
    21,404.05/29,537.66 = 11,972.61/x
  3. Step 3: Cross multiply
    21,404.05x = 29,537.66 × 11,972.61
  4. Step 4: Simplify right side
    21,404.05x = 353,642,913.42
  5. Step 5: Solve for x
    x = 353,642,913.42/21,404.05
  6. Step 6: Final answer
    x = 16,522.24

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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.