Home / 18,327.60-27,488.70-5,181.30

Finding the Fourth Proportional to 18,327.60, 27,488.70 and 5,181.30

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Solution

The fourth proportional to 18,327.60, 27,488.70 and 5,181.30 is: 7,771.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,327.60 : 27,488.70 = 5,181.30 : x
  2. Step 2: Convert to fraction form
    18,327.60/27,488.70 = 5,181.30/x
  3. Step 3: Cross multiply
    18,327.60x = 27,488.70 × 5,181.30
  4. Step 4: Simplify right side
    18,327.60x = 142,427,201.31
  5. Step 5: Solve for x
    x = 142,427,201.31/18,327.60
  6. Step 6: Final answer
    x = 7,771.19

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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.