Home / 12,899.57-19,349.38-3,539.71

Finding the Fourth Proportional to 12,899.57, 19,349.38 and 3,539.71

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Solution

The fourth proportional to 12,899.57, 19,349.38 and 3,539.71 is: 5,309.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.57 : 19,349.38 = 3,539.71 : x
  2. Step 2: Convert to fraction form
    12,899.57/19,349.38 = 3,539.71/x
  3. Step 3: Cross multiply
    12,899.57x = 19,349.38 × 3,539.71
  4. Step 4: Simplify right side
    12,899.57x = 68,491,136.66
  5. Step 5: Solve for x
    x = 68,491,136.66/12,899.57
  6. Step 6: Final answer
    x = 5,309.57

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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.