Home / 27,647.75-38,123.73-18,679.67

Finding the Fourth Proportional to 27,647.75, 38,123.73 and 18,679.67

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Solution

The fourth proportional to 27,647.75, 38,123.73 and 18,679.67 is: 25,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,647.75 : 38,123.73 = 18,679.67 : x
  2. Step 2: Convert to fraction form
    27,647.75/38,123.73 = 18,679.67/x
  3. Step 3: Cross multiply
    27,647.75x = 38,123.73 × 18,679.67
  4. Step 4: Simplify right side
    27,647.75x = 712,138,504.95
  5. Step 5: Solve for x
    x = 712,138,504.95/27,647.75
  6. Step 6: Final answer
    x = 25,757.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.