Home / 13,190.69-18,202.37-7,222.37

Finding the Fourth Proportional to 13,190.69, 18,202.37 and 7,222.37

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Solution

The fourth proportional to 13,190.69, 18,202.37 and 7,222.37 is: 9,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.69 : 18,202.37 = 7,222.37 : x
  2. Step 2: Convert to fraction form
    13,190.69/18,202.37 = 7,222.37/x
  3. Step 3: Cross multiply
    13,190.69x = 18,202.37 × 7,222.37
  4. Step 4: Simplify right side
    13,190.69x = 131,464,214.91
  5. Step 5: Solve for x
    x = 131,464,214.91/13,190.69
  6. Step 6: Final answer
    x = 9,966.44

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Double scale
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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.