Home / 13,907.35-19,192.95-7,940.89

Finding the Fourth Proportional to 13,907.35, 19,192.95 and 7,940.89

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Solution

The fourth proportional to 13,907.35, 19,192.95 and 7,940.89 is: 10,958.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.35 : 19,192.95 = 7,940.89 : x
  2. Step 2: Convert to fraction form
    13,907.35/19,192.95 = 7,940.89/x
  3. Step 3: Cross multiply
    13,907.35x = 19,192.95 × 7,940.89
  4. Step 4: Simplify right side
    13,907.35x = 152,409,104.73
  5. Step 5: Solve for x
    x = 152,409,104.73/13,907.35
  6. Step 6: Final answer
    x = 10,958.89

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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.