Home / 14,485.38-19,991.79-8,520.54

Finding the Fourth Proportional to 14,485.38, 19,991.79 and 8,520.54

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Solution

The fourth proportional to 14,485.38, 19,991.79 and 8,520.54 is: 11,759.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.38 : 19,991.79 = 8,520.54 : x
  2. Step 2: Convert to fraction form
    14,485.38/19,991.79 = 8,520.54/x
  3. Step 3: Cross multiply
    14,485.38x = 19,991.79 × 8,520.54
  4. Step 4: Simplify right side
    14,485.38x = 170,340,846.37
  5. Step 5: Solve for x
    x = 170,340,846.37/14,485.38
  6. Step 6: Final answer
    x = 11,759.50

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Half scale
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Double scale
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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.