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Finding the Fourth Proportional to 18,900.52, 26,083.74 and 10,517.20

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Solution

The fourth proportional to 18,900.52, 26,083.74 and 10,517.20 is: 14,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.52 : 26,083.74 = 10,517.20 : x
  2. Step 2: Convert to fraction form
    18,900.52/26,083.74 = 10,517.20/x
  3. Step 3: Cross multiply
    18,900.52x = 26,083.74 × 10,517.20
  4. Step 4: Simplify right side
    18,900.52x = 274,327,910.33
  5. Step 5: Solve for x
    x = 274,327,910.33/18,900.52
  6. Step 6: Final answer
    x = 14,514.30

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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.