Home / 12,815.80-19,241.58-6,581.09

Finding the Fourth Proportional to 12,815.80, 19,241.58 and 6,581.09

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Solution

The fourth proportional to 12,815.80, 19,241.58 and 6,581.09 is: 9,880.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.80 : 19,241.58 = 6,581.09 : x
  2. Step 2: Convert to fraction form
    12,815.80/19,241.58 = 6,581.09/x
  3. Step 3: Cross multiply
    12,815.80x = 19,241.58 × 6,581.09
  4. Step 4: Simplify right side
    12,815.80x = 126,630,569.72
  5. Step 5: Solve for x
    x = 126,630,569.72/12,815.80
  6. Step 6: Final answer
    x = 9,880.82

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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.