Home / 12,772.32-19,037.75-12,148.44

Finding the Fourth Proportional to 12,772.32, 19,037.75 and 12,148.44

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Solution

The fourth proportional to 12,772.32, 19,037.75 and 12,148.44 is: 18,107.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.32 : 19,037.75 = 12,148.44 : x
  2. Step 2: Convert to fraction form
    12,772.32/19,037.75 = 12,148.44/x
  3. Step 3: Cross multiply
    12,772.32x = 19,037.75 × 12,148.44
  4. Step 4: Simplify right side
    12,772.32x = 231,278,902.87
  5. Step 5: Solve for x
    x = 231,278,902.87/12,772.32
  6. Step 6: Final answer
    x = 18,107.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.