Home / 11,947.63-17,920.75-5,711.94

Finding the Fourth Proportional to 11,947.63, 17,920.75 and 5,711.94

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Solution

The fourth proportional to 11,947.63, 17,920.75 and 5,711.94 is: 8,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.63 : 17,920.75 = 5,711.94 : x
  2. Step 2: Convert to fraction form
    11,947.63/17,920.75 = 5,711.94/x
  3. Step 3: Cross multiply
    11,947.63x = 17,920.75 × 5,711.94
  4. Step 4: Simplify right side
    11,947.63x = 102,362,279.28
  5. Step 5: Solve for x
    x = 102,362,279.28/11,947.63
  6. Step 6: Final answer
    x = 8,567.58

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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.