Home / 28,857.20-43,289.44-9,128.63

Finding the Fourth Proportional to 28,857.20, 43,289.44 and 9,128.63

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Solution

The fourth proportional to 28,857.20, 43,289.44 and 9,128.63 is: 13,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.20 : 43,289.44 = 9,128.63 : x
  2. Step 2: Convert to fraction form
    28,857.20/43,289.44 = 9,128.63/x
  3. Step 3: Cross multiply
    28,857.20x = 43,289.44 × 9,128.63
  4. Step 4: Simplify right side
    28,857.20x = 395,173,366.07
  5. Step 5: Solve for x
    x = 395,173,366.07/28,857.20
  6. Step 6: Final answer
    x = 13,694.10

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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.