Home / 12,581.21-18,876.99-5,557.52

Finding the Fourth Proportional to 12,581.21, 18,876.99 and 5,557.52

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Solution

The fourth proportional to 12,581.21, 18,876.99 and 5,557.52 is: 8,338.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.21 : 18,876.99 = 5,557.52 : x
  2. Step 2: Convert to fraction form
    12,581.21/18,876.99 = 5,557.52/x
  3. Step 3: Cross multiply
    12,581.21x = 18,876.99 × 5,557.52
  4. Step 4: Simplify right side
    12,581.21x = 104,909,249.46
  5. Step 5: Solve for x
    x = 104,909,249.46/12,581.21
  6. Step 6: Final answer
    x = 8,338.57

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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.