Home / 21,771.76-30,029.06-14,205.96

Finding the Fourth Proportional to 21,771.76, 30,029.06 and 14,205.96

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Solution

The fourth proportional to 21,771.76, 30,029.06 and 14,205.96 is: 19,593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.76 : 30,029.06 = 14,205.96 : x
  2. Step 2: Convert to fraction form
    21,771.76/30,029.06 = 14,205.96/x
  3. Step 3: Cross multiply
    21,771.76x = 30,029.06 × 14,205.96
  4. Step 4: Simplify right side
    21,771.76x = 426,591,625.20
  5. Step 5: Solve for x
    x = 426,591,625.20/21,771.76
  6. Step 6: Final answer
    x = 19,593.81

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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.