Home / 13,905.25-19,189.56-7,936.80

Finding the Fourth Proportional to 13,905.25, 19,189.56 and 7,936.80

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Solution

The fourth proportional to 13,905.25, 19,189.56 and 7,936.80 is: 10,952.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.25 : 19,189.56 = 7,936.80 : x
  2. Step 2: Convert to fraction form
    13,905.25/19,189.56 = 7,936.80/x
  3. Step 3: Cross multiply
    13,905.25x = 19,189.56 × 7,936.80
  4. Step 4: Simplify right side
    13,905.25x = 152,303,699.81
  5. Step 5: Solve for x
    x = 152,303,699.81/13,905.25
  6. Step 6: Final answer
    x = 10,952.96

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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.