Home / 12,655.73-18,985.41-3,891.38

Finding the Fourth Proportional to 12,655.73, 18,985.41 and 3,891.38

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Solution

The fourth proportional to 12,655.73, 18,985.41 and 3,891.38 is: 5,837.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.73 : 18,985.41 = 3,891.38 : x
  2. Step 2: Convert to fraction form
    12,655.73/18,985.41 = 3,891.38/x
  3. Step 3: Cross multiply
    12,655.73x = 18,985.41 × 3,891.38
  4. Step 4: Simplify right side
    12,655.73x = 73,879,444.77
  5. Step 5: Solve for x
    x = 73,879,444.77/12,655.73
  6. Step 6: Final answer
    x = 5,837.63

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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.