Home / 13,187.68-19,779.44-6,172.56

Finding the Fourth Proportional to 13,187.68, 19,779.44 and 6,172.56

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Solution

The fourth proportional to 13,187.68, 19,779.44 and 6,172.56 is: 9,257.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.68 : 19,779.44 = 6,172.56 : x
  2. Step 2: Convert to fraction form
    13,187.68/19,779.44 = 6,172.56/x
  3. Step 3: Cross multiply
    13,187.68x = 19,779.44 × 6,172.56
  4. Step 4: Simplify right side
    13,187.68x = 122,089,780.17
  5. Step 5: Solve for x
    x = 122,089,780.17/13,187.68
  6. Step 6: Final answer
    x = 9,257.87

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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.