Home / 11,103.05-16,672.80-7,421.60

Finding the Fourth Proportional to 11,103.05, 16,672.80 and 7,421.60

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Solution

The fourth proportional to 11,103.05, 16,672.80 and 7,421.60 is: 11,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.05 : 16,672.80 = 7,421.60 : x
  2. Step 2: Convert to fraction form
    11,103.05/16,672.80 = 7,421.60/x
  3. Step 3: Cross multiply
    11,103.05x = 16,672.80 × 7,421.60
  4. Step 4: Simplify right side
    11,103.05x = 123,738,852.48
  5. Step 5: Solve for x
    x = 123,738,852.48/11,103.05
  6. Step 6: Final answer
    x = 11,144.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.