Home / 13,905.92-19,189.60-7,618.56

Finding the Fourth Proportional to 13,905.92, 19,189.60 and 7,618.56

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Solution

The fourth proportional to 13,905.92, 19,189.60 and 7,618.56 is: 10,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.92 : 19,189.60 = 7,618.56 : x
  2. Step 2: Convert to fraction form
    13,905.92/19,189.60 = 7,618.56/x
  3. Step 3: Cross multiply
    13,905.92x = 19,189.60 × 7,618.56
  4. Step 4: Simplify right side
    13,905.92x = 146,197,118.98
  5. Step 5: Solve for x
    x = 146,197,118.98/13,905.92
  6. Step 6: Final answer
    x = 10,513.30

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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.