Home / 10,918.88-16,379.40-4,343.60

Finding the Fourth Proportional to 10,918.88, 16,379.40 and 4,343.60

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Solution

The fourth proportional to 10,918.88, 16,379.40 and 4,343.60 is: 6,515.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.88 : 16,379.40 = 4,343.60 : x
  2. Step 2: Convert to fraction form
    10,918.88/16,379.40 = 4,343.60/x
  3. Step 3: Cross multiply
    10,918.88x = 16,379.40 × 4,343.60
  4. Step 4: Simplify right side
    10,918.88x = 71,145,561.84
  5. Step 5: Solve for x
    x = 71,145,561.84/10,918.88
  6. Step 6: Final answer
    x = 6,515.83

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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.