Home / 12,120.41-16,725.97-6,742.79

Finding the Fourth Proportional to 12,120.41, 16,725.97 and 6,742.79

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Solution

The fourth proportional to 12,120.41, 16,725.97 and 6,742.79 is: 9,304.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.41 : 16,725.97 = 6,742.79 : x
  2. Step 2: Convert to fraction form
    12,120.41/16,725.97 = 6,742.79/x
  3. Step 3: Cross multiply
    12,120.41x = 16,725.97 × 6,742.79
  4. Step 4: Simplify right side
    12,120.41x = 112,779,690.78
  5. Step 5: Solve for x
    x = 112,779,690.78/12,120.41
  6. Step 6: Final answer
    x = 9,304.94

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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.