Home / 13,905.96-19,186.92-8,454.87

Finding the Fourth Proportional to 13,905.96, 19,186.92 and 8,454.87

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Solution

The fourth proportional to 13,905.96, 19,186.92 and 8,454.87 is: 11,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.96 : 19,186.92 = 8,454.87 : x
  2. Step 2: Convert to fraction form
    13,905.96/19,186.92 = 8,454.87/x
  3. Step 3: Cross multiply
    13,905.96x = 19,186.92 × 8,454.87
  4. Step 4: Simplify right side
    13,905.96x = 162,222,914.30
  5. Step 5: Solve for x
    x = 162,222,914.30/13,905.96
  6. Step 6: Final answer
    x = 11,665.71

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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.