Home / 13,618.86-20,445.57-11,579.82

Finding the Fourth Proportional to 13,618.86, 20,445.57 and 11,579.82

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Solution

The fourth proportional to 13,618.86, 20,445.57 and 11,579.82 is: 17,384.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.86 : 20,445.57 = 11,579.82 : x
  2. Step 2: Convert to fraction form
    13,618.86/20,445.57 = 11,579.82/x
  3. Step 3: Cross multiply
    13,618.86x = 20,445.57 × 11,579.82
  4. Step 4: Simplify right side
    13,618.86x = 236,756,020.40
  5. Step 5: Solve for x
    x = 236,756,020.40/13,618.86
  6. Step 6: Final answer
    x = 17,384.42

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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.