Home / 11,663.10-17,489.79-3,870.36

Finding the Fourth Proportional to 11,663.10, 17,489.79 and 3,870.36

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Solution

The fourth proportional to 11,663.10, 17,489.79 and 3,870.36 is: 5,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,663.10 : 17,489.79 = 3,870.36 : x
  2. Step 2: Convert to fraction form
    11,663.10/17,489.79 = 3,870.36/x
  3. Step 3: Cross multiply
    11,663.10x = 17,489.79 × 3,870.36
  4. Step 4: Simplify right side
    11,663.10x = 67,691,783.62
  5. Step 5: Solve for x
    x = 67,691,783.62/11,663.10
  6. Step 6: Final answer
    x = 5,803.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.