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Finding the Fourth Proportional to 30,589.99, 45,884.44 and 8,403.28

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Solution

The fourth proportional to 30,589.99, 45,884.44 and 8,403.28 is: 12,604.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.99 : 45,884.44 = 8,403.28 : x
  2. Step 2: Convert to fraction form
    30,589.99/45,884.44 = 8,403.28/x
  3. Step 3: Cross multiply
    30,589.99x = 45,884.44 × 8,403.28
  4. Step 4: Simplify right side
    30,589.99x = 385,579,796.96
  5. Step 5: Solve for x
    x = 385,579,796.96/30,589.99
  6. Step 6: Final answer
    x = 12,604.77

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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.