Home / 12,928.66-17,843.48-7,895.78

Finding the Fourth Proportional to 12,928.66, 17,843.48 and 7,895.78

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Solution

The fourth proportional to 12,928.66, 17,843.48 and 7,895.78 is: 10,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.66 : 17,843.48 = 7,895.78 : x
  2. Step 2: Convert to fraction form
    12,928.66/17,843.48 = 7,895.78/x
  3. Step 3: Cross multiply
    12,928.66x = 17,843.48 × 7,895.78
  4. Step 4: Simplify right side
    12,928.66x = 140,888,103.30
  5. Step 5: Solve for x
    x = 140,888,103.30/12,928.66
  6. Step 6: Final answer
    x = 10,897.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.