Home / 12,656.40-18,982.80-4,336.80

Finding the Fourth Proportional to 12,656.40, 18,982.80 and 4,336.80

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Solution

The fourth proportional to 12,656.40, 18,982.80 and 4,336.80 is: 6,504.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.40 : 18,982.80 = 4,336.80 : x
  2. Step 2: Convert to fraction form
    12,656.40/18,982.80 = 4,336.80/x
  3. Step 3: Cross multiply
    12,656.40x = 18,982.80 × 4,336.80
  4. Step 4: Simplify right side
    12,656.40x = 82,324,607.04
  5. Step 5: Solve for x
    x = 82,324,607.04/12,656.40
  6. Step 6: Final answer
    x = 6,504.58

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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.