Home / 12,090.21-16,683.35-6,783.99

Finding the Fourth Proportional to 12,090.21, 16,683.35 and 6,783.99

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Solution

The fourth proportional to 12,090.21, 16,683.35 and 6,783.99 is: 9,361.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.21 : 16,683.35 = 6,783.99 : x
  2. Step 2: Convert to fraction form
    12,090.21/16,683.35 = 6,783.99/x
  3. Step 3: Cross multiply
    12,090.21x = 16,683.35 × 6,783.99
  4. Step 4: Simplify right side
    12,090.21x = 113,179,645.65
  5. Step 5: Solve for x
    x = 113,179,645.65/12,090.21
  6. Step 6: Final answer
    x = 9,361.26

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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.