Home / 13,865.98-20,779.30-10,731.38

Finding the Fourth Proportional to 13,865.98, 20,779.30 and 10,731.38

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Solution

The fourth proportional to 13,865.98, 20,779.30 and 10,731.38 is: 16,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.98 : 20,779.30 = 10,731.38 : x
  2. Step 2: Convert to fraction form
    13,865.98/20,779.30 = 10,731.38/x
  3. Step 3: Cross multiply
    13,865.98x = 20,779.30 × 10,731.38
  4. Step 4: Simplify right side
    13,865.98x = 222,990,564.43
  5. Step 5: Solve for x
    x = 222,990,564.43/13,865.98
  6. Step 6: Final answer
    x = 16,081.85

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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.