Home / 21,307.19-29,404.12-11,747.43

Finding the Fourth Proportional to 21,307.19, 29,404.12 and 11,747.43

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Solution

The fourth proportional to 21,307.19, 29,404.12 and 11,747.43 is: 16,211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.19 : 29,404.12 = 11,747.43 : x
  2. Step 2: Convert to fraction form
    21,307.19/29,404.12 = 11,747.43/x
  3. Step 3: Cross multiply
    21,307.19x = 29,404.12 × 11,747.43
  4. Step 4: Simplify right side
    21,307.19x = 345,422,694.39
  5. Step 5: Solve for x
    x = 345,422,694.39/21,307.19
  6. Step 6: Final answer
    x = 16,211.56

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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.