Home / 11,405.79-17,112.93-6,972.54

Finding the Fourth Proportional to 11,405.79, 17,112.93 and 6,972.54

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Solution

The fourth proportional to 11,405.79, 17,112.93 and 6,972.54 is: 10,461.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.79 : 17,112.93 = 6,972.54 : x
  2. Step 2: Convert to fraction form
    11,405.79/17,112.93 = 6,972.54/x
  3. Step 3: Cross multiply
    11,405.79x = 17,112.93 × 6,972.54
  4. Step 4: Simplify right side
    11,405.79x = 119,320,588.94
  5. Step 5: Solve for x
    x = 119,320,588.94/11,405.79
  6. Step 6: Final answer
    x = 10,461.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.