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Finding the Fourth Proportional to 20,653.96, 30,993.90 and 19,325.56

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Solution

The fourth proportional to 20,653.96, 30,993.90 and 19,325.56 is: 29,000.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.96 : 30,993.90 = 19,325.56 : x
  2. Step 2: Convert to fraction form
    20,653.96/30,993.90 = 19,325.56/x
  3. Step 3: Cross multiply
    20,653.96x = 30,993.90 × 19,325.56
  4. Step 4: Simplify right side
    20,653.96x = 598,974,474.08
  5. Step 5: Solve for x
    x = 598,974,474.08/20,653.96
  6. Step 6: Final answer
    x = 29,000.47

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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.