Home / 13,905.81-19,189.31-7,616.97

Finding the Fourth Proportional to 13,905.81, 19,189.31 and 7,616.97

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Solution

The fourth proportional to 13,905.81, 19,189.31 and 7,616.97 is: 10,511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.81 : 19,189.31 = 7,616.97 : x
  2. Step 2: Convert to fraction form
    13,905.81/19,189.31 = 7,616.97/x
  3. Step 3: Cross multiply
    13,905.81x = 19,189.31 × 7,616.97
  4. Step 4: Simplify right side
    13,905.81x = 146,164,360.51
  5. Step 5: Solve for x
    x = 146,164,360.51/13,905.81
  6. Step 6: Final answer
    x = 10,511.03

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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.