Home / 12,805.12-19,168.80-12,377.44

Finding the Fourth Proportional to 12,805.12, 19,168.80 and 12,377.44

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Solution

The fourth proportional to 12,805.12, 19,168.80 and 12,377.44 is: 18,528.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.12 : 19,168.80 = 12,377.44 : x
  2. Step 2: Convert to fraction form
    12,805.12/19,168.80 = 12,377.44/x
  3. Step 3: Cross multiply
    12,805.12x = 19,168.80 × 12,377.44
  4. Step 4: Simplify right side
    12,805.12x = 237,260,671.87
  5. Step 5: Solve for x
    x = 237,260,671.87/12,805.12
  6. Step 6: Final answer
    x = 18,528.58

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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.