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Finding the Fourth Proportional to 30,499.99, 45,748.63 and 8,313.36

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Solution

The fourth proportional to 30,499.99, 45,748.63 and 8,313.36 is: 12,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,499.99 : 45,748.63 = 8,313.36 : x
  2. Step 2: Convert to fraction form
    30,499.99/45,748.63 = 8,313.36/x
  3. Step 3: Cross multiply
    30,499.99x = 45,748.63 × 8,313.36
  4. Step 4: Simplify right side
    30,499.99x = 380,324,950.25
  5. Step 5: Solve for x
    x = 380,324,950.25/30,499.99
  6. Step 6: Final answer
    x = 12,469.68

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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.