Home / 13,800.12-20,706.60-5,905.05

Finding the Fourth Proportional to 13,800.12, 20,706.60 and 5,905.05

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Solution

The fourth proportional to 13,800.12, 20,706.60 and 5,905.05 is: 8,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.12 : 20,706.60 = 5,905.05 : x
  2. Step 2: Convert to fraction form
    13,800.12/20,706.60 = 5,905.05/x
  3. Step 3: Cross multiply
    13,800.12x = 20,706.60 × 5,905.05
  4. Step 4: Simplify right side
    13,800.12x = 122,273,508.33
  5. Step 5: Solve for x
    x = 122,273,508.33/13,800.12
  6. Step 6: Final answer
    x = 8,860.32

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1.5x scale

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.