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Finding the Fourth Proportional to 12,694.20, 19,056.90 and 8,014.20

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Solution

The fourth proportional to 12,694.20, 19,056.90 and 8,014.20 is: 12,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,694.20 : 19,056.90 = 8,014.20 : x
  2. Step 2: Convert to fraction form
    12,694.20/19,056.90 = 8,014.20/x
  3. Step 3: Cross multiply
    12,694.20x = 19,056.90 × 8,014.20
  4. Step 4: Simplify right side
    12,694.20x = 152,725,807.98
  5. Step 5: Solve for x
    x = 152,725,807.98/12,694.20
  6. Step 6: Final answer
    x = 12,031.15

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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.