Home / 13,188.05-18,199.73-7,883.45

Finding the Fourth Proportional to 13,188.05, 18,199.73 and 7,883.45

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Solution

The fourth proportional to 13,188.05, 18,199.73 and 7,883.45 is: 10,879.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.05 : 18,199.73 = 7,883.45 : x
  2. Step 2: Convert to fraction form
    13,188.05/18,199.73 = 7,883.45/x
  3. Step 3: Cross multiply
    13,188.05x = 18,199.73 × 7,883.45
  4. Step 4: Simplify right side
    13,188.05x = 143,476,622.05
  5. Step 5: Solve for x
    x = 143,476,622.05/13,188.05
  6. Step 6: Final answer
    x = 10,879.29

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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.