Home / 19,869-27,418.24-11,909.68

Finding the Fourth Proportional to 19,869, 27,418.24 and 11,909.68

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Solution

The fourth proportional to 19,869, 27,418.24 and 11,909.68 is: 16,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869 : 27,418.24 = 11,909.68 : x
  2. Step 2: Convert to fraction form
    19,869/27,418.24 = 11,909.68/x
  3. Step 3: Cross multiply
    19,869x = 27,418.24 × 11,909.68
  4. Step 4: Simplify right side
    19,869x = 326,542,464.56
  5. Step 5: Solve for x
    x = 326,542,464.56/19,869
  6. Step 6: Final answer
    x = 16,434.77

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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.