Home / 19,797.20-27,322.84-12,139.12

Finding the Fourth Proportional to 19,797.20, 27,322.84 and 12,139.12

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Solution

The fourth proportional to 19,797.20, 27,322.84 and 12,139.12 is: 16,753.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,797.20 : 27,322.84 = 12,139.12 : x
  2. Step 2: Convert to fraction form
    19,797.20/27,322.84 = 12,139.12/x
  3. Step 3: Cross multiply
    19,797.20x = 27,322.84 × 12,139.12
  4. Step 4: Simplify right side
    19,797.20x = 331,675,233.50
  5. Step 5: Solve for x
    x = 331,675,233.50/19,797.20
  6. Step 6: Final answer
    x = 16,753.64

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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.