Home / 21,891.47-30,219.89-15,968.34

Finding the Fourth Proportional to 21,891.47, 30,219.89 and 15,968.34

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Solution

The fourth proportional to 21,891.47, 30,219.89 and 15,968.34 is: 22,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.47 : 30,219.89 = 15,968.34 : x
  2. Step 2: Convert to fraction form
    21,891.47/30,219.89 = 15,968.34/x
  3. Step 3: Cross multiply
    21,891.47x = 30,219.89 × 15,968.34
  4. Step 4: Simplify right side
    21,891.47x = 482,561,398.44
  5. Step 5: Solve for x
    x = 482,561,398.44/21,891.47
  6. Step 6: Final answer
    x = 22,043.36

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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.