Home / 21,960.57-30,305.03-12,270.11

Finding the Fourth Proportional to 21,960.57, 30,305.03 and 12,270.11

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Solution

The fourth proportional to 21,960.57, 30,305.03 and 12,270.11 is: 16,932.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.57 : 30,305.03 = 12,270.11 : x
  2. Step 2: Convert to fraction form
    21,960.57/30,305.03 = 12,270.11/x
  3. Step 3: Cross multiply
    21,960.57x = 30,305.03 × 12,270.11
  4. Step 4: Simplify right side
    21,960.57x = 371,845,907.80
  5. Step 5: Solve for x
    x = 371,845,907.80/21,960.57
  6. Step 6: Final answer
    x = 16,932.43

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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.