Home / 13,554.47-20,328.57-3,691.78

Finding the Fourth Proportional to 13,554.47, 20,328.57 and 3,691.78

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Solution

The fourth proportional to 13,554.47, 20,328.57 and 3,691.78 is: 5,536.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,554.47 : 20,328.57 = 3,691.78 : x
  2. Step 2: Convert to fraction form
    13,554.47/20,328.57 = 3,691.78/x
  3. Step 3: Cross multiply
    13,554.47x = 20,328.57 × 3,691.78
  4. Step 4: Simplify right side
    13,554.47x = 75,048,557.33
  5. Step 5: Solve for x
    x = 75,048,557.33/13,554.47
  6. Step 6: Final answer
    x = 5,536.81

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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.