Home / 13,731.11-20,600.54-3,870.48

Finding the Fourth Proportional to 13,731.11, 20,600.54 and 3,870.48

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Solution

The fourth proportional to 13,731.11, 20,600.54 and 3,870.48 is: 5,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.11 : 20,600.54 = 3,870.48 : x
  2. Step 2: Convert to fraction form
    13,731.11/20,600.54 = 3,870.48/x
  3. Step 3: Cross multiply
    13,731.11x = 20,600.54 × 3,870.48
  4. Step 4: Simplify right side
    13,731.11x = 79,733,987.74
  5. Step 5: Solve for x
    x = 79,733,987.74/13,731.11
  6. Step 6: Final answer
    x = 5,806.81

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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.