Home / 13,878.06-20,799.20-12,091.88

Finding the Fourth Proportional to 13,878.06, 20,799.20 and 12,091.88

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Solution

The fourth proportional to 13,878.06, 20,799.20 and 12,091.88 is: 18,122.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.06 : 20,799.20 = 12,091.88 : x
  2. Step 2: Convert to fraction form
    13,878.06/20,799.20 = 12,091.88/x
  3. Step 3: Cross multiply
    13,878.06x = 20,799.20 × 12,091.88
  4. Step 4: Simplify right side
    13,878.06x = 251,501,430.50
  5. Step 5: Solve for x
    x = 251,501,430.50/13,878.06
  6. Step 6: Final answer
    x = 18,122.23

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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.