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Finding the Fourth Proportional to 28,104.66, 38,790.90 and 16,174.89

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Solution

The fourth proportional to 28,104.66, 38,790.90 and 16,174.89 is: 22,325.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.66 : 38,790.90 = 16,174.89 : x
  2. Step 2: Convert to fraction form
    28,104.66/38,790.90 = 16,174.89/x
  3. Step 3: Cross multiply
    28,104.66x = 38,790.90 × 16,174.89
  4. Step 4: Simplify right side
    28,104.66x = 627,438,540.50
  5. Step 5: Solve for x
    x = 627,438,540.50/28,104.66
  6. Step 6: Final answer
    x = 22,325.07

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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.