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Finding the Fourth Proportional to 16,628.40, 24,921.75 and 8,310.75

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Solution

The fourth proportional to 16,628.40, 24,921.75 and 8,310.75 is: 12,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,628.40 : 24,921.75 = 8,310.75 : x
  2. Step 2: Convert to fraction form
    16,628.40/24,921.75 = 8,310.75/x
  3. Step 3: Cross multiply
    16,628.40x = 24,921.75 × 8,310.75
  4. Step 4: Simplify right side
    16,628.40x = 207,118,433.81
  5. Step 5: Solve for x
    x = 207,118,433.81/16,628.40
  6. Step 6: Final answer
    x = 12,455.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.