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Finding the Fourth Proportional to 18,950, 28,402.86 and 11,164.28

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Solution

The fourth proportional to 18,950, 28,402.86 and 11,164.28 is: 16,733.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950 : 28,402.86 = 11,164.28 : x
  2. Step 2: Convert to fraction form
    18,950/28,402.86 = 11,164.28/x
  3. Step 3: Cross multiply
    18,950x = 28,402.86 × 11,164.28
  4. Step 4: Simplify right side
    18,950x = 317,097,481.84
  5. Step 5: Solve for x
    x = 317,097,481.84/18,950
  6. Step 6: Final answer
    x = 16,733.38

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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.