Home / 12,889.62-19,333.21-4,122.18

Finding the Fourth Proportional to 12,889.62, 19,333.21 and 4,122.18

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Solution

The fourth proportional to 12,889.62, 19,333.21 and 4,122.18 is: 6,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.62 : 19,333.21 = 4,122.18 : x
  2. Step 2: Convert to fraction form
    12,889.62/19,333.21 = 4,122.18/x
  3. Step 3: Cross multiply
    12,889.62x = 19,333.21 × 4,122.18
  4. Step 4: Simplify right side
    12,889.62x = 79,694,971.60
  5. Step 5: Solve for x
    x = 79,694,971.60/12,889.62
  6. Step 6: Final answer
    x = 6,182.88

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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.