Home / 13,209.45-19,800.66-5,812.53

Finding the Fourth Proportional to 13,209.45, 19,800.66 and 5,812.53

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Solution

The fourth proportional to 13,209.45, 19,800.66 and 5,812.53 is: 8,712.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.45 : 19,800.66 = 5,812.53 : x
  2. Step 2: Convert to fraction form
    13,209.45/19,800.66 = 5,812.53/x
  3. Step 3: Cross multiply
    13,209.45x = 19,800.66 × 5,812.53
  4. Step 4: Simplify right side
    13,209.45x = 115,091,930.27
  5. Step 5: Solve for x
    x = 115,091,930.27/13,209.45
  6. Step 6: Final answer
    x = 8,712.85

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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.