Home / 13,913.45-20,872.60-6,122.06

Finding the Fourth Proportional to 13,913.45, 20,872.60 and 6,122.06

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Solution

The fourth proportional to 13,913.45, 20,872.60 and 6,122.06 is: 9,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.45 : 20,872.60 = 6,122.06 : x
  2. Step 2: Convert to fraction form
    13,913.45/20,872.60 = 6,122.06/x
  3. Step 3: Cross multiply
    13,913.45x = 20,872.60 × 6,122.06
  4. Step 4: Simplify right side
    13,913.45x = 127,783,205.19
  5. Step 5: Solve for x
    x = 127,783,205.19/13,913.45
  6. Step 6: Final answer
    x = 9,184.15

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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.