Home / 12,940.80-19,411.29-5,539.02

Finding the Fourth Proportional to 12,940.80, 19,411.29 and 5,539.02

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Solution

The fourth proportional to 12,940.80, 19,411.29 and 5,539.02 is: 8,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.80 : 19,411.29 = 5,539.02 : x
  2. Step 2: Convert to fraction form
    12,940.80/19,411.29 = 5,539.02/x
  3. Step 3: Cross multiply
    12,940.80x = 19,411.29 × 5,539.02
  4. Step 4: Simplify right side
    12,940.80x = 107,519,523.54
  5. Step 5: Solve for x
    x = 107,519,523.54/12,940.80
  6. Step 6: Final answer
    x = 8,308.57

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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.