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Finding the Fourth Proportional to 30,201.44, 45,311.88 and 12,666.56

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Solution

The fourth proportional to 30,201.44, 45,311.88 and 12,666.56 is: 19,003.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,201.44 : 45,311.88 = 12,666.56 : x
  2. Step 2: Convert to fraction form
    30,201.44/45,311.88 = 12,666.56/x
  3. Step 3: Cross multiply
    30,201.44x = 45,311.88 × 12,666.56
  4. Step 4: Simplify right side
    30,201.44x = 573,945,646.73
  5. Step 5: Solve for x
    x = 573,945,646.73/30,201.44
  6. Step 6: Final answer
    x = 19,003.92

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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.