Home / 12,889.30-19,329.83-4,122.13

Finding the Fourth Proportional to 12,889.30, 19,329.83 and 4,122.13

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Solution

The fourth proportional to 12,889.30, 19,329.83 and 4,122.13 is: 6,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.30 : 19,329.83 = 4,122.13 : x
  2. Step 2: Convert to fraction form
    12,889.30/19,329.83 = 4,122.13/x
  3. Step 3: Cross multiply
    12,889.30x = 19,329.83 × 4,122.13
  4. Step 4: Simplify right side
    12,889.30x = 79,679,954.88
  5. Step 5: Solve for x
    x = 79,679,954.88/12,889.30
  6. Step 6: Final answer
    x = 6,181.87

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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.