Home / 12,138.51-16,749.60-6,832.30

Finding the Fourth Proportional to 12,138.51, 16,749.60 and 6,832.30

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Solution

The fourth proportional to 12,138.51, 16,749.60 and 6,832.30 is: 9,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.51 : 16,749.60 = 6,832.30 : x
  2. Step 2: Convert to fraction form
    12,138.51/16,749.60 = 6,832.30/x
  3. Step 3: Cross multiply
    12,138.51x = 16,749.60 × 6,832.30
  4. Step 4: Simplify right side
    12,138.51x = 114,438,292.08
  5. Step 5: Solve for x
    x = 114,438,292.08/12,138.51
  6. Step 6: Final answer
    x = 9,427.71

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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.