Home / 19,811.79-27,339.12-11,853.95

Finding the Fourth Proportional to 19,811.79, 27,339.12 and 11,853.95

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Solution

The fourth proportional to 19,811.79, 27,339.12 and 11,853.95 is: 16,357.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.79 : 27,339.12 = 11,853.95 : x
  2. Step 2: Convert to fraction form
    19,811.79/27,339.12 = 11,853.95/x
  3. Step 3: Cross multiply
    19,811.79x = 27,339.12 × 11,853.95
  4. Step 4: Simplify right side
    19,811.79x = 324,076,424.83
  5. Step 5: Solve for x
    x = 324,076,424.83/19,811.79
  6. Step 6: Final answer
    x = 16,357.76

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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.