Home / 11,147.21-15,383.70-6,111.65

Finding the Fourth Proportional to 11,147.21, 15,383.70 and 6,111.65

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Solution

The fourth proportional to 11,147.21, 15,383.70 and 6,111.65 is: 8,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.21 : 15,383.70 = 6,111.65 : x
  2. Step 2: Convert to fraction form
    11,147.21/15,383.70 = 6,111.65/x
  3. Step 3: Cross multiply
    11,147.21x = 15,383.70 × 6,111.65
  4. Step 4: Simplify right side
    11,147.21x = 94,019,713.19
  5. Step 5: Solve for x
    x = 94,019,713.19/11,147.21
  6. Step 6: Final answer
    x = 8,434.37

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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.