Home / 13,160.72-19,739.64-3,926

Finding the Fourth Proportional to 13,160.72, 19,739.64 and 3,926

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Solution

The fourth proportional to 13,160.72, 19,739.64 and 3,926 is: 5,888.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.72 : 19,739.64 = 3,926 : x
  2. Step 2: Convert to fraction form
    13,160.72/19,739.64 = 3,926/x
  3. Step 3: Cross multiply
    13,160.72x = 19,739.64 × 3,926
  4. Step 4: Simplify right side
    13,160.72x = 77,497,826.64
  5. Step 5: Solve for x
    x = 77,497,826.64/13,160.72
  6. Step 6: Final answer
    x = 5,888.57

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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.