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Finding the Fourth Proportional to 12,800.01, 17,664.09 and 7,135.12

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Solution

The fourth proportional to 12,800.01, 17,664.09 and 7,135.12 is: 9,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.01 : 17,664.09 = 7,135.12 : x
  2. Step 2: Convert to fraction form
    12,800.01/17,664.09 = 7,135.12/x
  3. Step 3: Cross multiply
    12,800.01x = 17,664.09 × 7,135.12
  4. Step 4: Simplify right side
    12,800.01x = 126,035,384.44
  5. Step 5: Solve for x
    x = 126,035,384.44/12,800.01
  6. Step 6: Final answer
    x = 9,846.51

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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.