Home / 12,943.90-19,403.97-4,174.30

Finding the Fourth Proportional to 12,943.90, 19,403.97 and 4,174.30

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Solution

The fourth proportional to 12,943.90, 19,403.97 and 4,174.30 is: 6,257.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.90 : 19,403.97 = 4,174.30 : x
  2. Step 2: Convert to fraction form
    12,943.90/19,403.97 = 4,174.30/x
  3. Step 3: Cross multiply
    12,943.90x = 19,403.97 × 4,174.30
  4. Step 4: Simplify right side
    12,943.90x = 80,997,991.97
  5. Step 5: Solve for x
    x = 80,997,991.97/12,943.90
  6. Step 6: Final answer
    x = 6,257.62

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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.