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Finding the Fourth Proportional to 18,755.96, 28,119.92 and 11,358.62

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Solution

The fourth proportional to 18,755.96, 28,119.92 and 11,358.62 is: 17,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.96 : 28,119.92 = 11,358.62 : x
  2. Step 2: Convert to fraction form
    18,755.96/28,119.92 = 11,358.62/x
  3. Step 3: Cross multiply
    18,755.96x = 28,119.92 × 11,358.62
  4. Step 4: Simplify right side
    18,755.96x = 319,403,485.71
  5. Step 5: Solve for x
    x = 319,403,485.71/18,755.96
  6. Step 6: Final answer
    x = 17,029.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.