Home / 21,728.22-29,982.87-17,262.78

Finding the Fourth Proportional to 21,728.22, 29,982.87 and 17,262.78

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Solution

The fourth proportional to 21,728.22, 29,982.87 and 17,262.78 is: 23,820.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,728.22 : 29,982.87 = 17,262.78 : x
  2. Step 2: Convert to fraction form
    21,728.22/29,982.87 = 17,262.78/x
  3. Step 3: Cross multiply
    21,728.22x = 29,982.87 × 17,262.78
  4. Step 4: Simplify right side
    21,728.22x = 517,587,688.58
  5. Step 5: Solve for x
    x = 517,587,688.58/21,728.22
  6. Step 6: Final answer
    x = 23,820.99

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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.