Home / 21,179.07-29,227.15-11,747.63

Finding the Fourth Proportional to 21,179.07, 29,227.15 and 11,747.63

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Solution

The fourth proportional to 21,179.07, 29,227.15 and 11,747.63 is: 16,211.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.07 : 29,227.15 = 11,747.63 : x
  2. Step 2: Convert to fraction form
    21,179.07/29,227.15 = 11,747.63/x
  3. Step 3: Cross multiply
    21,179.07x = 29,227.15 × 11,747.63
  4. Step 4: Simplify right side
    21,179.07x = 343,349,765.83
  5. Step 5: Solve for x
    x = 343,349,765.83/21,179.07
  6. Step 6: Final answer
    x = 16,211.75

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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.