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Finding the Fourth Proportional to 30,296.40, 45,400.05 and 21,993.90

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Solution

The fourth proportional to 30,296.40, 45,400.05 and 21,993.90 is: 32,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,296.40 : 45,400.05 = 21,993.90 : x
  2. Step 2: Convert to fraction form
    30,296.40/45,400.05 = 21,993.90/x
  3. Step 3: Cross multiply
    30,296.40x = 45,400.05 × 21,993.90
  4. Step 4: Simplify right side
    30,296.40x = 998,524,159.70
  5. Step 5: Solve for x
    x = 998,524,159.70/30,296.40
  6. Step 6: Final answer
    x = 32,958.51

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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.