Home / 28,842.78-43,270.30-9,122.92

Finding the Fourth Proportional to 28,842.78, 43,270.30 and 9,122.92

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Solution

The fourth proportional to 28,842.78, 43,270.30 and 9,122.92 is: 13,686.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,842.78 : 43,270.30 = 9,122.92 : x
  2. Step 2: Convert to fraction form
    28,842.78/43,270.30 = 9,122.92/x
  3. Step 3: Cross multiply
    28,842.78x = 43,270.30 × 9,122.92
  4. Step 4: Simplify right side
    28,842.78x = 394,751,485.28
  5. Step 5: Solve for x
    x = 394,751,485.28/28,842.78
  6. Step 6: Final answer
    x = 13,686.32

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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.