Home / 21,782.16-30,076.31-16,738.43

Finding the Fourth Proportional to 21,782.16, 30,076.31 and 16,738.43

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Solution

The fourth proportional to 21,782.16, 30,076.31 and 16,738.43 is: 23,112.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782.16 : 30,076.31 = 16,738.43 : x
  2. Step 2: Convert to fraction form
    21,782.16/30,076.31 = 16,738.43/x
  3. Step 3: Cross multiply
    21,782.16x = 30,076.31 × 16,738.43
  4. Step 4: Simplify right side
    21,782.16x = 503,430,101.06
  5. Step 5: Solve for x
    x = 503,430,101.06/21,782.16
  6. Step 6: Final answer
    x = 23,112.04

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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.