Home / 28,627.83-42,947.96-11,979.29

Finding the Fourth Proportional to 28,627.83, 42,947.96 and 11,979.29

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Solution

The fourth proportional to 28,627.83, 42,947.96 and 11,979.29 is: 17,971.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,627.83 : 42,947.96 = 11,979.29 : x
  2. Step 2: Convert to fraction form
    28,627.83/42,947.96 = 11,979.29/x
  3. Step 3: Cross multiply
    28,627.83x = 42,947.96 × 11,979.29
  4. Step 4: Simplify right side
    28,627.83x = 514,486,067.75
  5. Step 5: Solve for x
    x = 514,486,067.75/28,627.83
  6. Step 6: Final answer
    x = 17,971.54

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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.