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Finding the Fourth Proportional to 18,446.19, 25,458 and 11,274.63

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Solution

The fourth proportional to 18,446.19, 25,458 and 11,274.63 is: 15,560.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,446.19 : 25,458 = 11,274.63 : x
  2. Step 2: Convert to fraction form
    18,446.19/25,458 = 11,274.63/x
  3. Step 3: Cross multiply
    18,446.19x = 25,458 × 11,274.63
  4. Step 4: Simplify right side
    18,446.19x = 287,029,530.54
  5. Step 5: Solve for x
    x = 287,029,530.54/18,446.19
  6. Step 6: Final answer
    x = 15,560.37

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Half scale
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Double scale
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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.