Home / 12,905.10-19,359.09-4,136.94

Finding the Fourth Proportional to 12,905.10, 19,359.09 and 4,136.94

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Solution

The fourth proportional to 12,905.10, 19,359.09 and 4,136.94 is: 6,205.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.10 : 19,359.09 = 4,136.94 : x
  2. Step 2: Convert to fraction form
    12,905.10/19,359.09 = 4,136.94/x
  3. Step 3: Cross multiply
    12,905.10x = 19,359.09 × 4,136.94
  4. Step 4: Simplify right side
    12,905.10x = 80,087,393.78
  5. Step 5: Solve for x
    x = 80,087,393.78/12,905.10
  6. Step 6: Final answer
    x = 6,205.87

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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.