Home / 21,908.88-30,198.84-17,120.51

Finding the Fourth Proportional to 21,908.88, 30,198.84 and 17,120.51

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Solution

The fourth proportional to 21,908.88, 30,198.84 and 17,120.51 is: 23,598.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.88 : 30,198.84 = 17,120.51 : x
  2. Step 2: Convert to fraction form
    21,908.88/30,198.84 = 17,120.51/x
  3. Step 3: Cross multiply
    21,908.88x = 30,198.84 × 17,120.51
  4. Step 4: Simplify right side
    21,908.88x = 517,019,348.41
  5. Step 5: Solve for x
    x = 517,019,348.41/21,908.88
  6. Step 6: Final answer
    x = 23,598.62

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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.