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Finding the Fourth Proportional to 16,862.80, 25,293.96 and 7,628.80

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Solution

The fourth proportional to 16,862.80, 25,293.96 and 7,628.80 is: 11,443.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,862.80 : 25,293.96 = 7,628.80 : x
  2. Step 2: Convert to fraction form
    16,862.80/25,293.96 = 7,628.80/x
  3. Step 3: Cross multiply
    16,862.80x = 25,293.96 × 7,628.80
  4. Step 4: Simplify right side
    16,862.80x = 192,962,562.05
  5. Step 5: Solve for x
    x = 192,962,562.05/16,862.80
  6. Step 6: Final answer
    x = 11,443.09

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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.