Home / 14,728.11-20,324.79-8,440.44

Finding the Fourth Proportional to 14,728.11, 20,324.79 and 8,440.44

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Solution

The fourth proportional to 14,728.11, 20,324.79 and 8,440.44 is: 11,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,728.11 : 20,324.79 = 8,440.44 : x
  2. Step 2: Convert to fraction form
    14,728.11/20,324.79 = 8,440.44/x
  3. Step 3: Cross multiply
    14,728.11x = 20,324.79 × 8,440.44
  4. Step 4: Simplify right side
    14,728.11x = 171,550,170.51
  5. Step 5: Solve for x
    x = 171,550,170.51/14,728.11
  6. Step 6: Final answer
    x = 11,647.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.