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Finding the Fourth Proportional to 16,317.75, 22,518.50 and 8,865.75

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Solution

The fourth proportional to 16,317.75, 22,518.50 and 8,865.75 is: 12,234.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,317.75 : 22,518.50 = 8,865.75 : x
  2. Step 2: Convert to fraction form
    16,317.75/22,518.50 = 8,865.75/x
  3. Step 3: Cross multiply
    16,317.75x = 22,518.50 × 8,865.75
  4. Step 4: Simplify right side
    16,317.75x = 199,643,347.05
  5. Step 5: Solve for x
    x = 199,643,347.05/16,317.75
  6. Step 6: Final answer
    x = 12,234.74

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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.