Home / 12,689.08-19,028.42-3,801.28

Finding the Fourth Proportional to 12,689.08, 19,028.42 and 3,801.28

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Solution

The fourth proportional to 12,689.08, 19,028.42 and 3,801.28 is: 5,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.08 : 19,028.42 = 3,801.28 : x
  2. Step 2: Convert to fraction form
    12,689.08/19,028.42 = 3,801.28/x
  3. Step 3: Cross multiply
    12,689.08x = 19,028.42 × 3,801.28
  4. Step 4: Simplify right side
    12,689.08x = 72,332,335.73
  5. Step 5: Solve for x
    x = 72,332,335.73/12,689.08
  6. Step 6: Final answer
    x = 5,700.36

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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.