Home / 11,221.36-15,485.24-6,506.48

Finding the Fourth Proportional to 11,221.36, 15,485.24 and 6,506.48

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Solution

The fourth proportional to 11,221.36, 15,485.24 and 6,506.48 is: 8,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.36 : 15,485.24 = 6,506.48 : x
  2. Step 2: Convert to fraction form
    11,221.36/15,485.24 = 6,506.48/x
  3. Step 3: Cross multiply
    11,221.36x = 15,485.24 × 6,506.48
  4. Step 4: Simplify right side
    11,221.36x = 100,754,404.36
  5. Step 5: Solve for x
    x = 100,754,404.36/11,221.36
  6. Step 6: Final answer
    x = 8,978.81

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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.