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Finding the Fourth Proportional to 21,969.48, 30,318.30 and 12,033.48

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Solution

The fourth proportional to 21,969.48, 30,318.30 and 12,033.48 is: 16,606.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.48 : 30,318.30 = 12,033.48 : x
  2. Step 2: Convert to fraction form
    21,969.48/30,318.30 = 12,033.48/x
  3. Step 3: Cross multiply
    21,969.48x = 30,318.30 × 12,033.48
  4. Step 4: Simplify right side
    21,969.48x = 364,834,656.68
  5. Step 5: Solve for x
    x = 364,834,656.68/21,969.48
  6. Step 6: Final answer
    x = 16,606.43

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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.