Home / 12,170.42-16,795.40-7,138.27

Finding the Fourth Proportional to 12,170.42, 16,795.40 and 7,138.27

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Solution

The fourth proportional to 12,170.42, 16,795.40 and 7,138.27 is: 9,850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.42 : 16,795.40 = 7,138.27 : x
  2. Step 2: Convert to fraction form
    12,170.42/16,795.40 = 7,138.27/x
  3. Step 3: Cross multiply
    12,170.42x = 16,795.40 × 7,138.27
  4. Step 4: Simplify right side
    12,170.42x = 119,890,099.96
  5. Step 5: Solve for x
    x = 119,890,099.96/12,170.42
  6. Step 6: Final answer
    x = 9,850.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.