Home / 13,278.96-19,918.26-4,519.98

Finding the Fourth Proportional to 13,278.96, 19,918.26 and 4,519.98

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Solution

The fourth proportional to 13,278.96, 19,918.26 and 4,519.98 is: 6,779.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.96 : 19,918.26 = 4,519.98 : x
  2. Step 2: Convert to fraction form
    13,278.96/19,918.26 = 4,519.98/x
  3. Step 3: Cross multiply
    13,278.96x = 19,918.26 × 4,519.98
  4. Step 4: Simplify right side
    13,278.96x = 90,030,136.83
  5. Step 5: Solve for x
    x = 90,030,136.83/13,278.96
  6. Step 6: Final answer
    x = 6,779.91

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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.