Home / 28,783.65-43,181.37-12,143.73

Finding the Fourth Proportional to 28,783.65, 43,181.37 and 12,143.73

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Solution

The fourth proportional to 28,783.65, 43,181.37 and 12,143.73 is: 18,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.65 : 43,181.37 = 12,143.73 : x
  2. Step 2: Convert to fraction form
    28,783.65/43,181.37 = 12,143.73/x
  3. Step 3: Cross multiply
    28,783.65x = 43,181.37 × 12,143.73
  4. Step 4: Simplify right side
    28,783.65x = 524,382,898.31
  5. Step 5: Solve for x
    x = 524,382,898.31/28,783.65
  6. Step 6: Final answer
    x = 18,218.08

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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.