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Finding the Fourth Proportional to 30,213.39, 45,309.87 and 11,488.98

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Solution

The fourth proportional to 30,213.39, 45,309.87 and 11,488.98 is: 17,229.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.39 : 45,309.87 = 11,488.98 : x
  2. Step 2: Convert to fraction form
    30,213.39/45,309.87 = 11,488.98/x
  3. Step 3: Cross multiply
    30,213.39x = 45,309.87 × 11,488.98
  4. Step 4: Simplify right side
    30,213.39x = 520,564,190.23
  5. Step 5: Solve for x
    x = 520,564,190.23/30,213.39
  6. Step 6: Final answer
    x = 17,229.59

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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.