Home / 26,185.80-39,280.32-12,871.56

Finding the Fourth Proportional to 26,185.80, 39,280.32 and 12,871.56

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Solution

The fourth proportional to 26,185.80, 39,280.32 and 12,871.56 is: 19,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,185.80 : 39,280.32 = 12,871.56 : x
  2. Step 2: Convert to fraction form
    26,185.80/39,280.32 = 12,871.56/x
  3. Step 3: Cross multiply
    26,185.80x = 39,280.32 × 12,871.56
  4. Step 4: Simplify right side
    26,185.80x = 505,598,995.70
  5. Step 5: Solve for x
    x = 505,598,995.70/26,185.80
  6. Step 6: Final answer
    x = 19,308.14

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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.