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Finding the Fourth Proportional to 30,384.72, 45,591.12 and 11,658.51

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Solution

The fourth proportional to 30,384.72, 45,591.12 and 11,658.51 is: 17,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,384.72 : 45,591.12 = 11,658.51 : x
  2. Step 2: Convert to fraction form
    30,384.72/45,591.12 = 11,658.51/x
  3. Step 3: Cross multiply
    30,384.72x = 45,591.12 × 11,658.51
  4. Step 4: Simplify right side
    30,384.72x = 531,524,528.43
  5. Step 5: Solve for x
    x = 531,524,528.43/30,384.72
  6. Step 6: Final answer
    x = 17,493.15

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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.