Home / 11,985.74-17,980.62-3,663.81

Finding the Fourth Proportional to 11,985.74, 17,980.62 and 3,663.81

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Solution

The fourth proportional to 11,985.74, 17,980.62 and 3,663.81 is: 5,496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.74 : 17,980.62 = 3,663.81 : x
  2. Step 2: Convert to fraction form
    11,985.74/17,980.62 = 3,663.81/x
  3. Step 3: Cross multiply
    11,985.74x = 17,980.62 × 3,663.81
  4. Step 4: Simplify right side
    11,985.74x = 65,877,566.55
  5. Step 5: Solve for x
    x = 65,877,566.55/11,985.74
  6. Step 6: Final answer
    x = 5,496.33

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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.