Home / 11,779.80-17,671.42-3,985.98

Finding the Fourth Proportional to 11,779.80, 17,671.42 and 3,985.98

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Solution

The fourth proportional to 11,779.80, 17,671.42 and 3,985.98 is: 5,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,779.80 : 17,671.42 = 3,985.98 : x
  2. Step 2: Convert to fraction form
    11,779.80/17,671.42 = 3,985.98/x
  3. Step 3: Cross multiply
    11,779.80x = 17,671.42 × 3,985.98
  4. Step 4: Simplify right side
    11,779.80x = 70,437,926.69
  5. Step 5: Solve for x
    x = 70,437,926.69/11,779.80
  6. Step 6: Final answer
    x = 5,979.55

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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.