Home / 18,518.70-27,784.53-5,371.86

Finding the Fourth Proportional to 18,518.70, 27,784.53 and 5,371.86

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Solution

The fourth proportional to 18,518.70, 27,784.53 and 5,371.86 is: 8,059.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.70 : 27,784.53 = 5,371.86 : x
  2. Step 2: Convert to fraction form
    18,518.70/27,784.53 = 5,371.86/x
  3. Step 3: Cross multiply
    18,518.70x = 27,784.53 × 5,371.86
  4. Step 4: Simplify right side
    18,518.70x = 149,254,605.33
  5. Step 5: Solve for x
    x = 149,254,605.33/18,518.70
  6. Step 6: Final answer
    x = 8,059.67

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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.