Home / 18,329.13-27,478.31-12,766.05

Finding the Fourth Proportional to 18,329.13, 27,478.31 and 12,766.05

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Solution

The fourth proportional to 18,329.13, 27,478.31 and 12,766.05 is: 19,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.13 : 27,478.31 = 12,766.05 : x
  2. Step 2: Convert to fraction form
    18,329.13/27,478.31 = 12,766.05/x
  3. Step 3: Cross multiply
    18,329.13x = 27,478.31 × 12,766.05
  4. Step 4: Simplify right side
    18,329.13x = 350,789,415.55
  5. Step 5: Solve for x
    x = 350,789,415.55/18,329.13
  6. Step 6: Final answer
    x = 19,138.36

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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.