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Finding the Fourth Proportional to 12,004.68, 18,005.68 and 3,240.48

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Solution

The fourth proportional to 12,004.68, 18,005.68 and 3,240.48 is: 4,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.68 : 18,005.68 = 3,240.48 : x
  2. Step 2: Convert to fraction form
    12,004.68/18,005.68 = 3,240.48/x
  3. Step 3: Cross multiply
    12,004.68x = 18,005.68 × 3,240.48
  4. Step 4: Simplify right side
    12,004.68x = 58,347,045.93
  5. Step 5: Solve for x
    x = 58,347,045.93/12,004.68
  6. Step 6: Final answer
    x = 4,860.36

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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.