Home / 11,221.80-16,824.60-7,328.40

Finding the Fourth Proportional to 11,221.80, 16,824.60 and 7,328.40

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Solution

The fourth proportional to 11,221.80, 16,824.60 and 7,328.40 is: 10,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.80 : 16,824.60 = 7,328.40 : x
  2. Step 2: Convert to fraction form
    11,221.80/16,824.60 = 7,328.40/x
  3. Step 3: Cross multiply
    11,221.80x = 16,824.60 × 7,328.40
  4. Step 4: Simplify right side
    11,221.80x = 123,297,398.64
  5. Step 5: Solve for x
    x = 123,297,398.64/11,221.80
  6. Step 6: Final answer
    x = 10,987.31

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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.