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Finding the Fourth Proportional to 18,801.77, 25,947.48 and 10,418.09

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Solution

The fourth proportional to 18,801.77, 25,947.48 and 10,418.09 is: 14,377.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.77 : 25,947.48 = 10,418.09 : x
  2. Step 2: Convert to fraction form
    18,801.77/25,947.48 = 10,418.09/x
  3. Step 3: Cross multiply
    18,801.77x = 25,947.48 × 10,418.09
  4. Step 4: Simplify right side
    18,801.77x = 270,323,000.09
  5. Step 5: Solve for x
    x = 270,323,000.09/18,801.77
  6. Step 6: Final answer
    x = 14,377.53

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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.