Home / 12,880.94-19,313.96-6,869.60

Finding the Fourth Proportional to 12,880.94, 19,313.96 and 6,869.60

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Solution

The fourth proportional to 12,880.94, 19,313.96 and 6,869.60 is: 10,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.94 : 19,313.96 = 6,869.60 : x
  2. Step 2: Convert to fraction form
    12,880.94/19,313.96 = 6,869.60/x
  3. Step 3: Cross multiply
    12,880.94x = 19,313.96 × 6,869.60
  4. Step 4: Simplify right side
    12,880.94x = 132,679,179.62
  5. Step 5: Solve for x
    x = 132,679,179.62/12,880.94
  6. Step 6: Final answer
    x = 10,300.43

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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.