Home / 13,905.14-19,188.87-7,936.65

Finding the Fourth Proportional to 13,905.14, 19,188.87 and 7,936.65

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Solution

The fourth proportional to 13,905.14, 19,188.87 and 7,936.65 is: 10,952.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.14 : 19,188.87 = 7,936.65 : x
  2. Step 2: Convert to fraction form
    13,905.14/19,188.87 = 7,936.65/x
  3. Step 3: Cross multiply
    13,905.14x = 19,188.87 × 7,936.65
  4. Step 4: Simplify right side
    13,905.14x = 152,295,345.09
  5. Step 5: Solve for x
    x = 152,295,345.09/13,905.14
  6. Step 6: Final answer
    x = 10,952.45

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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.