Home / 28,910.45-43,339.32-11,129.74

Finding the Fourth Proportional to 28,910.45, 43,339.32 and 11,129.74

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Solution

The fourth proportional to 28,910.45, 43,339.32 and 11,129.74 is: 16,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.45 : 43,339.32 = 11,129.74 : x
  2. Step 2: Convert to fraction form
    28,910.45/43,339.32 = 11,129.74/x
  3. Step 3: Cross multiply
    28,910.45x = 43,339.32 × 11,129.74
  4. Step 4: Simplify right side
    28,910.45x = 482,355,255.03
  5. Step 5: Solve for x
    x = 482,355,255.03/28,910.45
  6. Step 6: Final answer
    x = 16,684.46

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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.