Home / 13,981.84-20,958.06-6,188.80

Finding the Fourth Proportional to 13,981.84, 20,958.06 and 6,188.80

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Solution

The fourth proportional to 13,981.84, 20,958.06 and 6,188.80 is: 9,276.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.84 : 20,958.06 = 6,188.80 : x
  2. Step 2: Convert to fraction form
    13,981.84/20,958.06 = 6,188.80/x
  3. Step 3: Cross multiply
    13,981.84x = 20,958.06 × 6,188.80
  4. Step 4: Simplify right side
    13,981.84x = 129,705,241.73
  5. Step 5: Solve for x
    x = 129,705,241.73/13,981.84
  6. Step 6: Final answer
    x = 9,276.69

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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.