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Finding the Fourth Proportional to 19,174.12, 28,772.36 and 8,080.12

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Solution

The fourth proportional to 19,174.12, 28,772.36 and 8,080.12 is: 12,124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.12 : 28,772.36 = 8,080.12 : x
  2. Step 2: Convert to fraction form
    19,174.12/28,772.36 = 8,080.12/x
  3. Step 3: Cross multiply
    19,174.12x = 28,772.36 × 8,080.12
  4. Step 4: Simplify right side
    19,174.12x = 232,484,121.48
  5. Step 5: Solve for x
    x = 232,484,121.48/19,174.12
  6. Step 6: Final answer
    x = 12,124.89

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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.