Home / 12,135.68-18,202.96-3,370.40

Finding the Fourth Proportional to 12,135.68, 18,202.96 and 3,370.40

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Solution

The fourth proportional to 12,135.68, 18,202.96 and 3,370.40 is: 5,055.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.68 : 18,202.96 = 3,370.40 : x
  2. Step 2: Convert to fraction form
    12,135.68/18,202.96 = 3,370.40/x
  3. Step 3: Cross multiply
    12,135.68x = 18,202.96 × 3,370.40
  4. Step 4: Simplify right side
    12,135.68x = 61,351,256.38
  5. Step 5: Solve for x
    x = 61,351,256.38/12,135.68
  6. Step 6: Final answer
    x = 5,055.44

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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.