Home / 11,221.75-15,485.13-6,506.35

Finding the Fourth Proportional to 11,221.75, 15,485.13 and 6,506.35

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Solution

The fourth proportional to 11,221.75, 15,485.13 and 6,506.35 is: 8,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.75 : 15,485.13 = 6,506.35 : x
  2. Step 2: Convert to fraction form
    11,221.75/15,485.13 = 6,506.35/x
  3. Step 3: Cross multiply
    11,221.75x = 15,485.13 × 6,506.35
  4. Step 4: Simplify right side
    11,221.75x = 100,751,675.58
  5. Step 5: Solve for x
    x = 100,751,675.58/11,221.75
  6. Step 6: Final answer
    x = 8,978.25

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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.