Home / 13,631.75-20,435.49-5,309.82

Finding the Fourth Proportional to 13,631.75, 20,435.49 and 5,309.82

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Solution

The fourth proportional to 13,631.75, 20,435.49 and 5,309.82 is: 7,960.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.75 : 20,435.49 = 5,309.82 : x
  2. Step 2: Convert to fraction form
    13,631.75/20,435.49 = 5,309.82/x
  3. Step 3: Cross multiply
    13,631.75x = 20,435.49 × 5,309.82
  4. Step 4: Simplify right side
    13,631.75x = 108,508,773.51
  5. Step 5: Solve for x
    x = 108,508,773.51/13,631.75
  6. Step 6: Final answer
    x = 7,960.00

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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.