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Finding the Fourth Proportional to 12,803.94, 17,651.79 and 8,555.22

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Solution

The fourth proportional to 12,803.94, 17,651.79 and 8,555.22 is: 11,794.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.94 : 17,651.79 = 8,555.22 : x
  2. Step 2: Convert to fraction form
    12,803.94/17,651.79 = 8,555.22/x
  3. Step 3: Cross multiply
    12,803.94x = 17,651.79 × 8,555.22
  4. Step 4: Simplify right side
    12,803.94x = 151,014,946.84
  5. Step 5: Solve for x
    x = 151,014,946.84/12,803.94
  6. Step 6: Final answer
    x = 11,794.41

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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.