Home / 13,200.12-19,800.81-3,339.48

Finding the Fourth Proportional to 13,200.12, 19,800.81 and 3,339.48

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Solution

The fourth proportional to 13,200.12, 19,800.81 and 3,339.48 is: 5,009.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.12 : 19,800.81 = 3,339.48 : x
  2. Step 2: Convert to fraction form
    13,200.12/19,800.81 = 3,339.48/x
  3. Step 3: Cross multiply
    13,200.12x = 19,800.81 × 3,339.48
  4. Step 4: Simplify right side
    13,200.12x = 66,124,408.98
  5. Step 5: Solve for x
    x = 66,124,408.98/13,200.12
  6. Step 6: Final answer
    x = 5,009.38

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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.