Home / 13,809.83-20,718.32-3,949.83

Finding the Fourth Proportional to 13,809.83, 20,718.32 and 3,949.83

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Solution

The fourth proportional to 13,809.83, 20,718.32 and 3,949.83 is: 5,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.83 : 20,718.32 = 3,949.83 : x
  2. Step 2: Convert to fraction form
    13,809.83/20,718.32 = 3,949.83/x
  3. Step 3: Cross multiply
    13,809.83x = 20,718.32 × 3,949.83
  4. Step 4: Simplify right side
    13,809.83x = 81,833,822.14
  5. Step 5: Solve for x
    x = 81,833,822.14/13,809.83
  6. Step 6: Final answer
    x = 5,925.77

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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.