Home / 21,960.30-30,305.37-12,269.77

Finding the Fourth Proportional to 21,960.30, 30,305.37 and 12,269.77

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Solution

The fourth proportional to 21,960.30, 30,305.37 and 12,269.77 is: 16,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.30 : 30,305.37 = 12,269.77 : x
  2. Step 2: Convert to fraction form
    21,960.30/30,305.37 = 12,269.77/x
  3. Step 3: Cross multiply
    21,960.30x = 30,305.37 × 12,269.77
  4. Step 4: Simplify right side
    21,960.30x = 371,839,919.66
  5. Step 5: Solve for x
    x = 371,839,919.66/21,960.30
  6. Step 6: Final answer
    x = 16,932.37

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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.