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Finding the Fourth Proportional to 13,995.63, 20,993.60 and 5,989.31

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Solution

The fourth proportional to 13,995.63, 20,993.60 and 5,989.31 is: 8,984.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.63 : 20,993.60 = 5,989.31 : x
  2. Step 2: Convert to fraction form
    13,995.63/20,993.60 = 5,989.31/x
  3. Step 3: Cross multiply
    13,995.63x = 20,993.60 × 5,989.31
  4. Step 4: Simplify right side
    13,995.63x = 125,737,193.39
  5. Step 5: Solve for x
    x = 125,737,193.39/13,995.63
  6. Step 6: Final answer
    x = 8,984.04

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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.