Home / 19,268.49-28,861.81-12,581.36

Finding the Fourth Proportional to 19,268.49, 28,861.81 and 12,581.36

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Solution

The fourth proportional to 19,268.49, 28,861.81 and 12,581.36 is: 18,845.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,268.49 : 28,861.81 = 12,581.36 : x
  2. Step 2: Convert to fraction form
    19,268.49/28,861.81 = 12,581.36/x
  3. Step 3: Cross multiply
    19,268.49x = 28,861.81 × 12,581.36
  4. Step 4: Simplify right side
    19,268.49x = 363,120,821.86
  5. Step 5: Solve for x
    x = 363,120,821.86/19,268.49
  6. Step 6: Final answer
    x = 18,845.32

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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.