Home / 10,961-15,126.20-6,776.56

Finding the Fourth Proportional to 10,961, 15,126.20 and 6,776.56

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Solution

The fourth proportional to 10,961, 15,126.20 and 6,776.56 is: 9,351.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961 : 15,126.20 = 6,776.56 : x
  2. Step 2: Convert to fraction form
    10,961/15,126.20 = 6,776.56/x
  3. Step 3: Cross multiply
    10,961x = 15,126.20 × 6,776.56
  4. Step 4: Simplify right side
    10,961x = 102,503,601.87
  5. Step 5: Solve for x
    x = 102,503,601.87/10,961
  6. Step 6: Final answer
    x = 9,351.67

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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.