Home / 12,611.84-18,912.27-4,289.63

Finding the Fourth Proportional to 12,611.84, 18,912.27 and 4,289.63

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Solution

The fourth proportional to 12,611.84, 18,912.27 and 4,289.63 is: 6,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.84 : 18,912.27 = 4,289.63 : x
  2. Step 2: Convert to fraction form
    12,611.84/18,912.27 = 4,289.63/x
  3. Step 3: Cross multiply
    12,611.84x = 18,912.27 × 4,289.63
  4. Step 4: Simplify right side
    12,611.84x = 81,126,546.20
  5. Step 5: Solve for x
    x = 81,126,546.20/12,611.84
  6. Step 6: Final answer
    x = 6,432.57

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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.