Home / 11,812.81-16,286.47-9,680.53

Finding the Fourth Proportional to 11,812.81, 16,286.47 and 9,680.53

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Solution

The fourth proportional to 11,812.81, 16,286.47 and 9,680.53 is: 13,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,812.81 : 16,286.47 = 9,680.53 : x
  2. Step 2: Convert to fraction form
    11,812.81/16,286.47 = 9,680.53/x
  3. Step 3: Cross multiply
    11,812.81x = 16,286.47 × 9,680.53
  4. Step 4: Simplify right side
    11,812.81x = 157,661,661.43
  5. Step 5: Solve for x
    x = 157,661,661.43/11,812.81
  6. Step 6: Final answer
    x = 13,346.67

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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.