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Finding the Fourth Proportional to 21,969.56, 30,318 and 12,033.56

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Solution

The fourth proportional to 21,969.56, 30,318 and 12,033.56 is: 16,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.56 : 30,318 = 12,033.56 : x
  2. Step 2: Convert to fraction form
    21,969.56/30,318 = 12,033.56/x
  3. Step 3: Cross multiply
    21,969.56x = 30,318 × 12,033.56
  4. Step 4: Simplify right side
    21,969.56x = 364,833,472.08
  5. Step 5: Solve for x
    x = 364,833,472.08/21,969.56
  6. Step 6: Final answer
    x = 16,606.32

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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.