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Finding the Fourth Proportional to 20,601.78, 30,847.31 and 16,948.12

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Solution

The fourth proportional to 20,601.78, 30,847.31 and 16,948.12 is: 25,376.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.78 : 30,847.31 = 16,948.12 : x
  2. Step 2: Convert to fraction form
    20,601.78/30,847.31 = 16,948.12/x
  3. Step 3: Cross multiply
    20,601.78x = 30,847.31 × 16,948.12
  4. Step 4: Simplify right side
    20,601.78x = 522,803,911.56
  5. Step 5: Solve for x
    x = 522,803,911.56/20,601.78
  6. Step 6: Final answer
    x = 25,376.64

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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.