Home / 11,133.31-15,374.37-7,161.32

Finding the Fourth Proportional to 11,133.31, 15,374.37 and 7,161.32

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Solution

The fourth proportional to 11,133.31, 15,374.37 and 7,161.32 is: 9,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.31 : 15,374.37 = 7,161.32 : x
  2. Step 2: Convert to fraction form
    11,133.31/15,374.37 = 7,161.32/x
  3. Step 3: Cross multiply
    11,133.31x = 15,374.37 × 7,161.32
  4. Step 4: Simplify right side
    11,133.31x = 110,100,706.50
  5. Step 5: Solve for x
    x = 110,100,706.50/11,133.31
  6. Step 6: Final answer
    x = 9,889.31

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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.