Home / 11,131.12-15,360.42-6,415.48

Finding the Fourth Proportional to 11,131.12, 15,360.42 and 6,415.48

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Solution

The fourth proportional to 11,131.12, 15,360.42 and 6,415.48 is: 8,853.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.12 : 15,360.42 = 6,415.48 : x
  2. Step 2: Convert to fraction form
    11,131.12/15,360.42 = 6,415.48/x
  3. Step 3: Cross multiply
    11,131.12x = 15,360.42 × 6,415.48
  4. Step 4: Simplify right side
    11,131.12x = 98,544,467.30
  5. Step 5: Solve for x
    x = 98,544,467.30/11,131.12
  6. Step 6: Final answer
    x = 8,853.06

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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.