Home / 13,905.57-19,190.16-7,618.35

Finding the Fourth Proportional to 13,905.57, 19,190.16 and 7,618.35

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Solution

The fourth proportional to 13,905.57, 19,190.16 and 7,618.35 is: 10,513.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.57 : 19,190.16 = 7,618.35 : x
  2. Step 2: Convert to fraction form
    13,905.57/19,190.16 = 7,618.35/x
  3. Step 3: Cross multiply
    13,905.57x = 19,190.16 × 7,618.35
  4. Step 4: Simplify right side
    13,905.57x = 146,197,355.44
  5. Step 5: Solve for x
    x = 146,197,355.44/13,905.57
  6. Step 6: Final answer
    x = 10,513.58

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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.