Home / 13,902.28-19,189.82-8,451.33

Finding the Fourth Proportional to 13,902.28, 19,189.82 and 8,451.33

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Solution

The fourth proportional to 13,902.28, 19,189.82 and 8,451.33 is: 11,665.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.28 : 19,189.82 = 8,451.33 : x
  2. Step 2: Convert to fraction form
    13,902.28/19,189.82 = 8,451.33/x
  3. Step 3: Cross multiply
    13,902.28x = 19,189.82 × 8,451.33
  4. Step 4: Simplify right side
    13,902.28x = 162,179,501.46
  5. Step 5: Solve for x
    x = 162,179,501.46/13,902.28
  6. Step 6: Final answer
    x = 11,665.68

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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.