Home / 13,278.20-19,923.80-8,350.16

Finding the Fourth Proportional to 13,278.20, 19,923.80 and 8,350.16

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Solution

The fourth proportional to 13,278.20, 19,923.80 and 8,350.16 is: 12,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.20 : 19,923.80 = 8,350.16 : x
  2. Step 2: Convert to fraction form
    13,278.20/19,923.80 = 8,350.16/x
  3. Step 3: Cross multiply
    13,278.20x = 19,923.80 × 8,350.16
  4. Step 4: Simplify right side
    13,278.20x = 166,366,776.44
  5. Step 5: Solve for x
    x = 166,366,776.44/13,278.20
  6. Step 6: Final answer
    x = 12,529.32

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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.