Home / 10,977.81-15,147.75-6,668.67

Finding the Fourth Proportional to 10,977.81, 15,147.75 and 6,668.67

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Solution

The fourth proportional to 10,977.81, 15,147.75 and 6,668.67 is: 9,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,977.81 : 15,147.75 = 6,668.67 : x
  2. Step 2: Convert to fraction form
    10,977.81/15,147.75 = 6,668.67/x
  3. Step 3: Cross multiply
    10,977.81x = 15,147.75 × 6,668.67
  4. Step 4: Simplify right side
    10,977.81x = 101,015,345.99
  5. Step 5: Solve for x
    x = 101,015,345.99/10,977.81
  6. Step 6: Final answer
    x = 9,201.78

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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.