Home / 12,261.75-16,921.26-6,672.75

Finding the Fourth Proportional to 12,261.75, 16,921.26 and 6,672.75

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Solution

The fourth proportional to 12,261.75, 16,921.26 and 6,672.75 is: 9,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.75 : 16,921.26 = 6,672.75 : x
  2. Step 2: Convert to fraction form
    12,261.75/16,921.26 = 6,672.75/x
  3. Step 3: Cross multiply
    12,261.75x = 16,921.26 × 6,672.75
  4. Step 4: Simplify right side
    12,261.75x = 112,911,337.67
  5. Step 5: Solve for x
    x = 112,911,337.67/12,261.75
  6. Step 6: Final answer
    x = 9,208.42

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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.