Home / 19,112.88-28,657.68-8,580.86

Finding the Fourth Proportional to 19,112.88, 28,657.68 and 8,580.86

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Solution

The fourth proportional to 19,112.88, 28,657.68 and 8,580.86 is: 12,866.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.88 : 28,657.68 = 8,580.86 : x
  2. Step 2: Convert to fraction form
    19,112.88/28,657.68 = 8,580.86/x
  3. Step 3: Cross multiply
    19,112.88x = 28,657.68 × 8,580.86
  4. Step 4: Simplify right side
    19,112.88x = 245,907,540.00
  5. Step 5: Solve for x
    x = 245,907,540.00/19,112.88
  6. Step 6: Final answer
    x = 12,866.06

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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.