Home / 28,920.38-43,380.60-11,380.64

Finding the Fourth Proportional to 28,920.38, 43,380.60 and 11,380.64

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Solution

The fourth proportional to 28,920.38, 43,380.60 and 11,380.64 is: 17,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.38 : 43,380.60 = 11,380.64 : x
  2. Step 2: Convert to fraction form
    28,920.38/43,380.60 = 11,380.64/x
  3. Step 3: Cross multiply
    28,920.38x = 43,380.60 × 11,380.64
  4. Step 4: Simplify right side
    28,920.38x = 493,698,991.58
  5. Step 5: Solve for x
    x = 493,698,991.58/28,920.38
  6. Step 6: Final answer
    x = 17,070.97

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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.