Home / 13,189.09-18,200.93-7,220.74

Finding the Fourth Proportional to 13,189.09, 18,200.93 and 7,220.74

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Solution

The fourth proportional to 13,189.09, 18,200.93 and 7,220.74 is: 9,964.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.09 : 18,200.93 = 7,220.74 : x
  2. Step 2: Convert to fraction form
    13,189.09/18,200.93 = 7,220.74/x
  3. Step 3: Cross multiply
    13,189.09x = 18,200.93 × 7,220.74
  4. Step 4: Simplify right side
    13,189.09x = 131,424,092.28
  5. Step 5: Solve for x
    x = 131,424,092.28/13,189.09
  6. Step 6: Final answer
    x = 9,964.61

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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.