Home / 12,118.75-16,723.69-6,741.13

Finding the Fourth Proportional to 12,118.75, 16,723.69 and 6,741.13

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Solution

The fourth proportional to 12,118.75, 16,723.69 and 6,741.13 is: 9,302.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.75 : 16,723.69 = 6,741.13 : x
  2. Step 2: Convert to fraction form
    12,118.75/16,723.69 = 6,741.13/x
  3. Step 3: Cross multiply
    12,118.75x = 16,723.69 × 6,741.13
  4. Step 4: Simplify right side
    12,118.75x = 112,736,568.37
  5. Step 5: Solve for x
    x = 112,736,568.37/12,118.75
  6. Step 6: Final answer
    x = 9,302.66

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Half scale
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Double scale
Find fourth proportional to 12,119.75, 16,725.07 and 6,742.13
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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.