Home / 11,171.23-15,394.04-7,975.51

Finding the Fourth Proportional to 11,171.23, 15,394.04 and 7,975.51

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Solution

The fourth proportional to 11,171.23, 15,394.04 and 7,975.51 is: 10,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,171.23 : 15,394.04 = 7,975.51 : x
  2. Step 2: Convert to fraction form
    11,171.23/15,394.04 = 7,975.51/x
  3. Step 3: Cross multiply
    11,171.23x = 15,394.04 × 7,975.51
  4. Step 4: Simplify right side
    11,171.23x = 122,775,319.96
  5. Step 5: Solve for x
    x = 122,775,319.96/11,171.23
  6. Step 6: Final answer
    x = 10,990.31

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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.