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Finding the Fourth Proportional to 21,674.80, 29,913.04 and 12,245.04

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Solution

The fourth proportional to 21,674.80, 29,913.04 and 12,245.04 is: 16,899.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,674.80 : 29,913.04 = 12,245.04 : x
  2. Step 2: Convert to fraction form
    21,674.80/29,913.04 = 12,245.04/x
  3. Step 3: Cross multiply
    21,674.80x = 29,913.04 × 12,245.04
  4. Step 4: Simplify right side
    21,674.80x = 366,286,371.32
  5. Step 5: Solve for x
    x = 366,286,371.32/21,674.80
  6. Step 6: Final answer
    x = 16,899.18

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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.