Home / 12,787.99-19,162.09-4,886.20

Finding the Fourth Proportional to 12,787.99, 19,162.09 and 4,886.20

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Solution

The fourth proportional to 12,787.99, 19,162.09 and 4,886.20 is: 7,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.99 : 19,162.09 = 4,886.20 : x
  2. Step 2: Convert to fraction form
    12,787.99/19,162.09 = 4,886.20/x
  3. Step 3: Cross multiply
    12,787.99x = 19,162.09 × 4,886.20
  4. Step 4: Simplify right side
    12,787.99x = 93,629,708.35
  5. Step 5: Solve for x
    x = 93,629,708.35/12,787.99
  6. Step 6: Final answer
    x = 7,321.69

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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.