Home / 11,356.28-15,662.79-7,378.67

Finding the Fourth Proportional to 11,356.28, 15,662.79 and 7,378.67

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Solution

The fourth proportional to 11,356.28, 15,662.79 and 7,378.67 is: 10,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.28 : 15,662.79 = 7,378.67 : x
  2. Step 2: Convert to fraction form
    11,356.28/15,662.79 = 7,378.67/x
  3. Step 3: Cross multiply
    11,356.28x = 15,662.79 × 7,378.67
  4. Step 4: Simplify right side
    11,356.28x = 115,570,558.69
  5. Step 5: Solve for x
    x = 115,570,558.69/11,356.28
  6. Step 6: Final answer
    x = 10,176.80

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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.