Home / 12,188.76-18,284.66-4,289.41

Finding the Fourth Proportional to 12,188.76, 18,284.66 and 4,289.41

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Solution

The fourth proportional to 12,188.76, 18,284.66 and 4,289.41 is: 6,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.76 : 18,284.66 = 4,289.41 : x
  2. Step 2: Convert to fraction form
    12,188.76/18,284.66 = 4,289.41/x
  3. Step 3: Cross multiply
    12,188.76x = 18,284.66 × 4,289.41
  4. Step 4: Simplify right side
    12,188.76x = 78,430,403.45
  5. Step 5: Solve for x
    x = 78,430,403.45/12,188.76
  6. Step 6: Final answer
    x = 6,434.65

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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.