Home / 12,813.72-19,220.58-3,579.48

Finding the Fourth Proportional to 12,813.72, 19,220.58 and 3,579.48

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Solution

The fourth proportional to 12,813.72, 19,220.58 and 3,579.48 is: 5,369.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.72 : 19,220.58 = 3,579.48 : x
  2. Step 2: Convert to fraction form
    12,813.72/19,220.58 = 3,579.48/x
  3. Step 3: Cross multiply
    12,813.72x = 19,220.58 × 3,579.48
  4. Step 4: Simplify right side
    12,813.72x = 68,799,681.70
  5. Step 5: Solve for x
    x = 68,799,681.70/12,813.72
  6. Step 6: Final answer
    x = 5,369.22

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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.