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Finding the Fourth Proportional to 13,991.52, 20,994.56 and 6,198.50

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Solution

The fourth proportional to 13,991.52, 20,994.56 and 6,198.50 is: 9,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.52 : 20,994.56 = 6,198.50 : x
  2. Step 2: Convert to fraction form
    13,991.52/20,994.56 = 6,198.50/x
  3. Step 3: Cross multiply
    13,991.52x = 20,994.56 × 6,198.50
  4. Step 4: Simplify right side
    13,991.52x = 130,134,780.16
  5. Step 5: Solve for x
    x = 130,134,780.16/13,991.52
  6. Step 6: Final answer
    x = 9,300.98

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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.