Home / 13,384.64-20,055.07-8,103.66

Finding the Fourth Proportional to 13,384.64, 20,055.07 and 8,103.66

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Solution

The fourth proportional to 13,384.64, 20,055.07 and 8,103.66 is: 12,142.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.64 : 20,055.07 = 8,103.66 : x
  2. Step 2: Convert to fraction form
    13,384.64/20,055.07 = 8,103.66/x
  3. Step 3: Cross multiply
    13,384.64x = 20,055.07 × 8,103.66
  4. Step 4: Simplify right side
    13,384.64x = 162,519,403.48
  5. Step 5: Solve for x
    x = 162,519,403.48/13,384.64
  6. Step 6: Final answer
    x = 12,142.23

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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.