Home / 12,186.54-18,279.14-4,289.45

Finding the Fourth Proportional to 12,186.54, 18,279.14 and 4,289.45

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Solution

The fourth proportional to 12,186.54, 18,279.14 and 4,289.45 is: 6,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.54 : 18,279.14 = 4,289.45 : x
  2. Step 2: Convert to fraction form
    12,186.54/18,279.14 = 4,289.45/x
  3. Step 3: Cross multiply
    12,186.54x = 18,279.14 × 4,289.45
  4. Step 4: Simplify right side
    12,186.54x = 78,407,344.23
  5. Step 5: Solve for x
    x = 78,407,344.23/12,186.54
  6. Step 6: Final answer
    x = 6,433.93

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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.