Home / 12,268.44-16,921.32-7,788.30

Finding the Fourth Proportional to 12,268.44, 16,921.32 and 7,788.30

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Solution

The fourth proportional to 12,268.44, 16,921.32 and 7,788.30 is: 10,742.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.44 : 16,921.32 = 7,788.30 : x
  2. Step 2: Convert to fraction form
    12,268.44/16,921.32 = 7,788.30/x
  3. Step 3: Cross multiply
    12,268.44x = 16,921.32 × 7,788.30
  4. Step 4: Simplify right side
    12,268.44x = 131,788,316.56
  5. Step 5: Solve for x
    x = 131,788,316.56/12,268.44
  6. Step 6: Final answer
    x = 10,742.06

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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.