Home / 14,936.36-20,611.86-8,221.64

Finding the Fourth Proportional to 14,936.36, 20,611.86 and 8,221.64

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Solution

The fourth proportional to 14,936.36, 20,611.86 and 8,221.64 is: 11,345.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.36 : 20,611.86 = 8,221.64 : x
  2. Step 2: Convert to fraction form
    14,936.36/20,611.86 = 8,221.64/x
  3. Step 3: Cross multiply
    14,936.36x = 20,611.86 × 8,221.64
  4. Step 4: Simplify right side
    14,936.36x = 169,463,292.65
  5. Step 5: Solve for x
    x = 169,463,292.65/14,936.36
  6. Step 6: Final answer
    x = 11,345.69

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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.