Home / 11,987.51-17,986.45-6,434.37

Finding the Fourth Proportional to 11,987.51, 17,986.45 and 6,434.37

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Solution

The fourth proportional to 11,987.51, 17,986.45 and 6,434.37 is: 9,654.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.51 : 17,986.45 = 6,434.37 : x
  2. Step 2: Convert to fraction form
    11,987.51/17,986.45 = 6,434.37/x
  3. Step 3: Cross multiply
    11,987.51x = 17,986.45 × 6,434.37
  4. Step 4: Simplify right side
    11,987.51x = 115,731,470.27
  5. Step 5: Solve for x
    x = 115,731,470.27/11,987.51
  6. Step 6: Final answer
    x = 9,654.34

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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.