Home / 27,861.21-41,790.35-9,138.78

Finding the Fourth Proportional to 27,861.21, 41,790.35 and 9,138.78

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Solution

The fourth proportional to 27,861.21, 41,790.35 and 9,138.78 is: 13,707.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,861.21 : 41,790.35 = 9,138.78 : x
  2. Step 2: Convert to fraction form
    27,861.21/41,790.35 = 9,138.78/x
  3. Step 3: Cross multiply
    27,861.21x = 41,790.35 × 9,138.78
  4. Step 4: Simplify right side
    27,861.21x = 381,912,769.08
  5. Step 5: Solve for x
    x = 381,912,769.08/27,861.21
  6. Step 6: Final answer
    x = 13,707.69

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1.5x scale

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.