Home / 13,560-20,291.40-8,016.36

Finding the Fourth Proportional to 13,560, 20,291.40 and 8,016.36

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Solution

The fourth proportional to 13,560, 20,291.40 and 8,016.36 is: 11,995.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560 : 20,291.40 = 8,016.36 : x
  2. Step 2: Convert to fraction form
    13,560/20,291.40 = 8,016.36/x
  3. Step 3: Cross multiply
    13,560x = 20,291.40 × 8,016.36
  4. Step 4: Simplify right side
    13,560x = 162,663,167.30
  5. Step 5: Solve for x
    x = 162,663,167.30/13,560
  6. Step 6: Final answer
    x = 11,995.81

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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.