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Finding the Fourth Proportional to 18,892.69, 28,343.14 and 5,744.72

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Solution

The fourth proportional to 18,892.69, 28,343.14 and 5,744.72 is: 8,618.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.69 : 28,343.14 = 5,744.72 : x
  2. Step 2: Convert to fraction form
    18,892.69/28,343.14 = 5,744.72/x
  3. Step 3: Cross multiply
    18,892.69x = 28,343.14 × 5,744.72
  4. Step 4: Simplify right side
    18,892.69x = 162,823,403.22
  5. Step 5: Solve for x
    x = 162,823,403.22/18,892.69
  6. Step 6: Final answer
    x = 8,618.33

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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.