Home / 12,089.88-18,121.70-4,692.16

Finding the Fourth Proportional to 12,089.88, 18,121.70 and 4,692.16

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Solution

The fourth proportional to 12,089.88, 18,121.70 and 4,692.16 is: 7,033.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.88 : 18,121.70 = 4,692.16 : x
  2. Step 2: Convert to fraction form
    12,089.88/18,121.70 = 4,692.16/x
  3. Step 3: Cross multiply
    12,089.88x = 18,121.70 × 4,692.16
  4. Step 4: Simplify right side
    12,089.88x = 85,029,915.87
  5. Step 5: Solve for x
    x = 85,029,915.87/12,089.88
  6. Step 6: Final answer
    x = 7,033.15

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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.