Home / 13,188.35-18,200.14-7,219.92

Finding the Fourth Proportional to 13,188.35, 18,200.14 and 7,219.92

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Solution

The fourth proportional to 13,188.35, 18,200.14 and 7,219.92 is: 9,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.35 : 18,200.14 = 7,219.92 : x
  2. Step 2: Convert to fraction form
    13,188.35/18,200.14 = 7,219.92/x
  3. Step 3: Cross multiply
    13,188.35x = 18,200.14 × 7,219.92
  4. Step 4: Simplify right side
    13,188.35x = 131,403,554.79
  5. Step 5: Solve for x
    x = 131,403,554.79/13,188.35
  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.