Home / 13,190.74-18,203.22-7,222.41

Finding the Fourth Proportional to 13,190.74, 18,203.22 and 7,222.41

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Solution

The fourth proportional to 13,190.74, 18,203.22 and 7,222.41 is: 9,966.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.74 : 18,203.22 = 7,222.41 : x
  2. Step 2: Convert to fraction form
    13,190.74/18,203.22 = 7,222.41/x
  3. Step 3: Cross multiply
    13,190.74x = 18,203.22 × 7,222.41
  4. Step 4: Simplify right side
    13,190.74x = 131,471,136.22
  5. Step 5: Solve for x
    x = 131,471,136.22/13,190.74
  6. Step 6: Final answer
    x = 9,966.92

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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.