Home / 12,188.54-18,282.80-4,289.22

Finding the Fourth Proportional to 12,188.54, 18,282.80 and 4,289.22

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Solution

The fourth proportional to 12,188.54, 18,282.80 and 4,289.22 is: 6,433.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.54 : 18,282.80 = 4,289.22 : x
  2. Step 2: Convert to fraction form
    12,188.54/18,282.80 = 4,289.22/x
  3. Step 3: Cross multiply
    12,188.54x = 18,282.80 × 4,289.22
  4. Step 4: Simplify right side
    12,188.54x = 78,418,962.14
  5. Step 5: Solve for x
    x = 78,418,962.14/12,188.54
  6. Step 6: Final answer
    x = 6,433.83

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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.