Home / 28,979.87-43,464.67-13,181.20

Finding the Fourth Proportional to 28,979.87, 43,464.67 and 13,181.20

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Solution

The fourth proportional to 28,979.87, 43,464.67 and 13,181.20 is: 19,769.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.87 : 43,464.67 = 13,181.20 : x
  2. Step 2: Convert to fraction form
    28,979.87/43,464.67 = 13,181.20/x
  3. Step 3: Cross multiply
    28,979.87x = 43,464.67 × 13,181.20
  4. Step 4: Simplify right side
    28,979.87x = 572,916,508.20
  5. Step 5: Solve for x
    x = 572,916,508.20/28,979.87
  6. Step 6: Final answer
    x = 19,769.46

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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.