Home / 11,628.05-17,442.07-3,420.05

Finding the Fourth Proportional to 11,628.05, 17,442.07 and 3,420.05

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Solution

The fourth proportional to 11,628.05, 17,442.07 and 3,420.05 is: 5,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,628.05 : 17,442.07 = 3,420.05 : x
  2. Step 2: Convert to fraction form
    11,628.05/17,442.07 = 3,420.05/x
  3. Step 3: Cross multiply
    11,628.05x = 17,442.07 × 3,420.05
  4. Step 4: Simplify right side
    11,628.05x = 59,652,786.56
  5. Step 5: Solve for x
    x = 59,652,786.56/11,628.05
  6. Step 6: Final answer
    x = 5,130.08

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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.