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Finding the Fourth Proportional to 30,003.56, 45,003.50 and 12,473.54

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Solution

The fourth proportional to 30,003.56, 45,003.50 and 12,473.54 is: 18,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,003.56 : 45,003.50 = 12,473.54 : x
  2. Step 2: Convert to fraction form
    30,003.56/45,003.50 = 12,473.54/x
  3. Step 3: Cross multiply
    30,003.56x = 45,003.50 × 12,473.54
  4. Step 4: Simplify right side
    30,003.56x = 561,352,957.39
  5. Step 5: Solve for x
    x = 561,352,957.39/30,003.56
  6. Step 6: Final answer
    x = 18,709.55

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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.