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Finding the Fourth Proportional to 18,801.07, 25,947.09 and 10,419.19

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Solution

The fourth proportional to 18,801.07, 25,947.09 and 10,419.19 is: 14,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.07 : 25,947.09 = 10,419.19 : x
  2. Step 2: Convert to fraction form
    18,801.07/25,947.09 = 10,419.19/x
  3. Step 3: Cross multiply
    18,801.07x = 25,947.09 × 10,419.19
  4. Step 4: Simplify right side
    18,801.07x = 270,347,660.66
  5. Step 5: Solve for x
    x = 270,347,660.66/18,801.07
  6. Step 6: Final answer
    x = 14,379.38

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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.