Home / 19,858.50-27,409.68-11,479.86

Finding the Fourth Proportional to 19,858.50, 27,409.68 and 11,479.86

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Solution

The fourth proportional to 19,858.50, 27,409.68 and 11,479.86 is: 15,845.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.50 : 27,409.68 = 11,479.86 : x
  2. Step 2: Convert to fraction form
    19,858.50/27,409.68 = 11,479.86/x
  3. Step 3: Cross multiply
    19,858.50x = 27,409.68 × 11,479.86
  4. Step 4: Simplify right side
    19,858.50x = 314,659,289.04
  5. Step 5: Solve for x
    x = 314,659,289.04/19,858.50
  6. Step 6: Final answer
    x = 15,845.07

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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.