Home / 28,921.44-39,917.52-16,991.04

Finding the Fourth Proportional to 28,921.44, 39,917.52 and 16,991.04

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Solution

The fourth proportional to 28,921.44, 39,917.52 and 16,991.04 is: 23,451.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.44 : 39,917.52 = 16,991.04 : x
  2. Step 2: Convert to fraction form
    28,921.44/39,917.52 = 16,991.04/x
  3. Step 3: Cross multiply
    28,921.44x = 39,917.52 × 16,991.04
  4. Step 4: Simplify right side
    28,921.44x = 678,240,179.02
  5. Step 5: Solve for x
    x = 678,240,179.02/28,921.44
  6. Step 6: Final answer
    x = 23,451.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.