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Finding the Fourth Proportional to 18,897.54, 26,078.74 and 10,399.44

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Solution

The fourth proportional to 18,897.54, 26,078.74 and 10,399.44 is: 14,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.54 : 26,078.74 = 10,399.44 : x
  2. Step 2: Convert to fraction form
    18,897.54/26,078.74 = 10,399.44/x
  3. Step 3: Cross multiply
    18,897.54x = 26,078.74 × 10,399.44
  4. Step 4: Simplify right side
    18,897.54x = 271,204,291.91
  5. Step 5: Solve for x
    x = 271,204,291.91/18,897.54
  6. Step 6: Final answer
    x = 14,351.30

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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.