Home / 13,188.94-18,200.75-7,220.97

Finding the Fourth Proportional to 13,188.94, 18,200.75 and 7,220.97

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Solution

The fourth proportional to 13,188.94, 18,200.75 and 7,220.97 is: 9,964.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.94 : 18,200.75 = 7,220.97 : x
  2. Step 2: Convert to fraction form
    13,188.94/18,200.75 = 7,220.97/x
  3. Step 3: Cross multiply
    13,188.94x = 18,200.75 × 7,220.97
  4. Step 4: Simplify right side
    13,188.94x = 131,427,033.62
  5. Step 5: Solve for x
    x = 131,427,033.62/13,188.94
  6. Step 6: Final answer
    x = 9,964.94

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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.