Home / 11,813.40-17,707.59-3,913.88

Finding the Fourth Proportional to 11,813.40, 17,707.59 and 3,913.88

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Solution

The fourth proportional to 11,813.40, 17,707.59 and 3,913.88 is: 5,866.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.40 : 17,707.59 = 3,913.88 : x
  2. Step 2: Convert to fraction form
    11,813.40/17,707.59 = 3,913.88/x
  3. Step 3: Cross multiply
    11,813.40x = 17,707.59 × 3,913.88
  4. Step 4: Simplify right side
    11,813.40x = 69,305,293.81
  5. Step 5: Solve for x
    x = 69,305,293.81/11,813.40
  6. Step 6: Final answer
    x = 5,866.67

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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.