Home / 12,213.76-16,853.16-7,177.60

Finding the Fourth Proportional to 12,213.76, 16,853.16 and 7,177.60

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Solution

The fourth proportional to 12,213.76, 16,853.16 and 7,177.60 is: 9,904.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.76 : 16,853.16 = 7,177.60 : x
  2. Step 2: Convert to fraction form
    12,213.76/16,853.16 = 7,177.60/x
  3. Step 3: Cross multiply
    12,213.76x = 16,853.16 × 7,177.60
  4. Step 4: Simplify right side
    12,213.76x = 120,965,241.22
  5. Step 5: Solve for x
    x = 120,965,241.22/12,213.76
  6. Step 6: Final answer
    x = 9,904.01

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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.