Home / 12,928.46-17,843.20-7,895.60

Finding the Fourth Proportional to 12,928.46, 17,843.20 and 7,895.60

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Solution

The fourth proportional to 12,928.46, 17,843.20 and 7,895.60 is: 10,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.46 : 17,843.20 = 7,895.60 : x
  2. Step 2: Convert to fraction form
    12,928.46/17,843.20 = 7,895.60/x
  3. Step 3: Cross multiply
    12,928.46x = 17,843.20 × 7,895.60
  4. Step 4: Simplify right side
    12,928.46x = 140,882,727.88
  5. Step 5: Solve for x
    x = 140,882,727.88/12,928.46
  6. Step 6: Final answer
    x = 10,897.10

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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.