Home / 18,120.73-27,179.88-4,972

Finding the Fourth Proportional to 18,120.73, 27,179.88 and 4,972

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Solution

The fourth proportional to 18,120.73, 27,179.88 and 4,972 is: 7,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.73 : 27,179.88 = 4,972 : x
  2. Step 2: Convert to fraction form
    18,120.73/27,179.88 = 4,972/x
  3. Step 3: Cross multiply
    18,120.73x = 27,179.88 × 4,972
  4. Step 4: Simplify right side
    18,120.73x = 135,138,363.36
  5. Step 5: Solve for x
    x = 135,138,363.36/18,120.73
  6. Step 6: Final answer
    x = 7,457.67

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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.