Home / 12,188.58-18,279.24-5,168.48

Finding the Fourth Proportional to 12,188.58, 18,279.24 and 5,168.48

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Solution

The fourth proportional to 12,188.58, 18,279.24 and 5,168.48 is: 7,751.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.58 : 18,279.24 = 5,168.48 : x
  2. Step 2: Convert to fraction form
    12,188.58/18,279.24 = 5,168.48/x
  3. Step 3: Cross multiply
    12,188.58x = 18,279.24 × 5,168.48
  4. Step 4: Simplify right side
    12,188.58x = 94,475,794.96
  5. Step 5: Solve for x
    x = 94,475,794.96/12,188.58
  6. Step 6: Final answer
    x = 7,751.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.