Home / 13,890.87-19,167.44-7,922.79

Finding the Fourth Proportional to 13,890.87, 19,167.44 and 7,922.79

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Solution

The fourth proportional to 13,890.87, 19,167.44 and 7,922.79 is: 10,932.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.87 : 19,167.44 = 7,922.79 : x
  2. Step 2: Convert to fraction form
    13,890.87/19,167.44 = 7,922.79/x
  3. Step 3: Cross multiply
    13,890.87x = 19,167.44 × 7,922.79
  4. Step 4: Simplify right side
    13,890.87x = 151,859,562.34
  5. Step 5: Solve for x
    x = 151,859,562.34/13,890.87
  6. Step 6: Final answer
    x = 10,932.33

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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.