Home / 13,188.45-18,199.48-7,220.24

Finding the Fourth Proportional to 13,188.45, 18,199.48 and 7,220.24

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Solution

The fourth proportional to 13,188.45, 18,199.48 and 7,220.24 is: 9,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.45 : 18,199.48 = 7,220.24 : x
  2. Step 2: Convert to fraction form
    13,188.45/18,199.48 = 7,220.24/x
  3. Step 3: Cross multiply
    13,188.45x = 18,199.48 × 7,220.24
  4. Step 4: Simplify right side
    13,188.45x = 131,404,613.48
  5. Step 5: Solve for x
    x = 131,404,613.48/13,188.45
  6. Step 6: Final answer
    x = 9,963.61

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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.