Home / 11,147.07-15,383.13-6,111.75

Finding the Fourth Proportional to 11,147.07, 15,383.13 and 6,111.75

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Solution

The fourth proportional to 11,147.07, 15,383.13 and 6,111.75 is: 8,434.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.07 : 15,383.13 = 6,111.75 : x
  2. Step 2: Convert to fraction form
    11,147.07/15,383.13 = 6,111.75/x
  3. Step 3: Cross multiply
    11,147.07x = 15,383.13 × 6,111.75
  4. Step 4: Simplify right side
    11,147.07x = 94,017,844.78
  5. Step 5: Solve for x
    x = 94,017,844.78/11,147.07
  6. Step 6: Final answer
    x = 8,434.31

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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.