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Finding the Fourth Proportional to 28,042.96, 38,694.90 and 16,104.64

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Solution

The fourth proportional to 28,042.96, 38,694.90 and 16,104.64 is: 22,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.96 : 38,694.90 = 16,104.64 : x
  2. Step 2: Convert to fraction form
    28,042.96/38,694.90 = 16,104.64/x
  3. Step 3: Cross multiply
    28,042.96x = 38,694.90 × 16,104.64
  4. Step 4: Simplify right side
    28,042.96x = 623,167,434.34
  5. Step 5: Solve for x
    x = 623,167,434.34/28,042.96
  6. Step 6: Final answer
    x = 22,221.89

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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.