Home / 12,170.70-18,219.60-7,237.80

Finding the Fourth Proportional to 12,170.70, 18,219.60 and 7,237.80

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Solution

The fourth proportional to 12,170.70, 18,219.60 and 7,237.80 is: 10,835.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.70 : 18,219.60 = 7,237.80 : x
  2. Step 2: Convert to fraction form
    12,170.70/18,219.60 = 7,237.80/x
  3. Step 3: Cross multiply
    12,170.70x = 18,219.60 × 7,237.80
  4. Step 4: Simplify right side
    12,170.70x = 131,869,820.88
  5. Step 5: Solve for x
    x = 131,869,820.88/12,170.70
  6. Step 6: Final answer
    x = 10,835.02

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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.