Home / 21,968.63-30,322.17-12,542.66

Finding the Fourth Proportional to 21,968.63, 30,322.17 and 12,542.66

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Solution

The fourth proportional to 21,968.63, 30,322.17 and 12,542.66 is: 17,311.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.63 : 30,322.17 = 12,542.66 : x
  2. Step 2: Convert to fraction form
    21,968.63/30,322.17 = 12,542.66/x
  3. Step 3: Cross multiply
    21,968.63x = 30,322.17 × 12,542.66
  4. Step 4: Simplify right side
    21,968.63x = 380,320,517.16
  5. Step 5: Solve for x
    x = 380,320,517.16/21,968.63
  6. Step 6: Final answer
    x = 17,311.99

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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.