Home / 13,994.72-20,999.11-8,728.36

Finding the Fourth Proportional to 13,994.72, 20,999.11 and 8,728.36

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Solution

The fourth proportional to 13,994.72, 20,999.11 and 8,728.36 is: 13,096.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.72 : 20,999.11 = 8,728.36 : x
  2. Step 2: Convert to fraction form
    13,994.72/20,999.11 = 8,728.36/x
  3. Step 3: Cross multiply
    13,994.72x = 20,999.11 × 8,728.36
  4. Step 4: Simplify right side
    13,994.72x = 183,287,791.76
  5. Step 5: Solve for x
    x = 183,287,791.76/13,994.72
  6. Step 6: Final answer
    x = 13,096.92

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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.