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Finding the Fourth Proportional to 19,858.09, 27,403.09 and 11,360.38

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Solution

The fourth proportional to 19,858.09, 27,403.09 and 11,360.38 is: 15,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.09 : 27,403.09 = 11,360.38 : x
  2. Step 2: Convert to fraction form
    19,858.09/27,403.09 = 11,360.38/x
  3. Step 3: Cross multiply
    19,858.09x = 27,403.09 × 11,360.38
  4. Step 4: Simplify right side
    19,858.09x = 311,309,515.57
  5. Step 5: Solve for x
    x = 311,309,515.57/19,858.09
  6. Step 6: Final answer
    x = 15,676.71

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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.