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Finding the Fourth Proportional to 12,993.94, 19,488.05 and 3,631.45

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Solution

The fourth proportional to 12,993.94, 19,488.05 and 3,631.45 is: 5,446.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993.94 : 19,488.05 = 3,631.45 : x
  2. Step 2: Convert to fraction form
    12,993.94/19,488.05 = 3,631.45/x
  3. Step 3: Cross multiply
    12,993.94x = 19,488.05 × 3,631.45
  4. Step 4: Simplify right side
    12,993.94x = 70,769,782.79
  5. Step 5: Solve for x
    x = 70,769,782.79/12,993.94
  6. Step 6: Final answer
    x = 5,446.37

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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.