Home / 13,945.64-19,243.80-7,976.34

Finding the Fourth Proportional to 13,945.64, 19,243.80 and 7,976.34

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Solution

The fourth proportional to 13,945.64, 19,243.80 and 7,976.34 is: 11,006.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.64 : 19,243.80 = 7,976.34 : x
  2. Step 2: Convert to fraction form
    13,945.64/19,243.80 = 7,976.34/x
  3. Step 3: Cross multiply
    13,945.64x = 19,243.80 × 7,976.34
  4. Step 4: Simplify right side
    13,945.64x = 153,495,091.69
  5. Step 5: Solve for x
    x = 153,495,091.69/13,945.64
  6. Step 6: Final answer
    x = 11,006.67

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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.