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Finding the Fourth Proportional to 18,999.03, 28,481.12 and 7,303.44

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Solution

The fourth proportional to 18,999.03, 28,481.12 and 7,303.44 is: 10,948.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.03 : 28,481.12 = 7,303.44 : x
  2. Step 2: Convert to fraction form
    18,999.03/28,481.12 = 7,303.44/x
  3. Step 3: Cross multiply
    18,999.03x = 28,481.12 × 7,303.44
  4. Step 4: Simplify right side
    18,999.03x = 208,010,151.05
  5. Step 5: Solve for x
    x = 208,010,151.05/18,999.03
  6. Step 6: Final answer
    x = 10,948.46

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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.