Home / 12,107.05-18,145.51-8,591.44

Finding the Fourth Proportional to 12,107.05, 18,145.51 and 8,591.44

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Solution

The fourth proportional to 12,107.05, 18,145.51 and 8,591.44 is: 12,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.05 : 18,145.51 = 8,591.44 : x
  2. Step 2: Convert to fraction form
    12,107.05/18,145.51 = 8,591.44/x
  3. Step 3: Cross multiply
    12,107.05x = 18,145.51 × 8,591.44
  4. Step 4: Simplify right side
    12,107.05x = 155,896,060.43
  5. Step 5: Solve for x
    x = 155,896,060.43/12,107.05
  6. Step 6: Final answer
    x = 12,876.47

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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.