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Finding the Fourth Proportional to 16,818.80, 25,228.20 and 14,313.20

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Solution

The fourth proportional to 16,818.80, 25,228.20 and 14,313.20 is: 21,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818.80 : 25,228.20 = 14,313.20 : x
  2. Step 2: Convert to fraction form
    16,818.80/25,228.20 = 14,313.20/x
  3. Step 3: Cross multiply
    16,818.80x = 25,228.20 × 14,313.20
  4. Step 4: Simplify right side
    16,818.80x = 361,096,272.24
  5. Step 5: Solve for x
    x = 361,096,272.24/16,818.80
  6. Step 6: Final answer
    x = 21,469.80

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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.