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Finding the Fourth Proportional to 28,008.92, 38,650.50 and 16,679.25

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Solution

The fourth proportional to 28,008.92, 38,650.50 and 16,679.25 is: 23,016.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.92 : 38,650.50 = 16,679.25 : x
  2. Step 2: Convert to fraction form
    28,008.92/38,650.50 = 16,679.25/x
  3. Step 3: Cross multiply
    28,008.92x = 38,650.50 × 16,679.25
  4. Step 4: Simplify right side
    28,008.92x = 644,661,352.13
  5. Step 5: Solve for x
    x = 644,661,352.13/28,008.92
  6. Step 6: Final answer
    x = 23,016.29

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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.