Home / 12,813.24-19,219.86-3,579

Finding the Fourth Proportional to 12,813.24, 19,219.86 and 3,579

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Solution

The fourth proportional to 12,813.24, 19,219.86 and 3,579 is: 5,368.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.24 : 19,219.86 = 3,579 : x
  2. Step 2: Convert to fraction form
    12,813.24/19,219.86 = 3,579/x
  3. Step 3: Cross multiply
    12,813.24x = 19,219.86 × 3,579
  4. Step 4: Simplify right side
    12,813.24x = 68,787,878.94
  5. Step 5: Solve for x
    x = 68,787,878.94/12,813.24
  6. Step 6: Final answer
    x = 5,368.50

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Similar ratio
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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.