Home / 13,631.00-20,434.37-5,309.07

Finding the Fourth Proportional to 13,631.00, 20,434.37 and 5,309.07

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Solution

The fourth proportional to 13,631.00, 20,434.37 and 5,309.07 is: 7,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.00 : 20,434.37 = 5,309.07 : x
  2. Step 2: Convert to fraction form
    13,631.00/20,434.37 = 5,309.07/x
  3. Step 3: Cross multiply
    13,631.00x = 20,434.37 × 5,309.07
  4. Step 4: Simplify right side
    13,631.00x = 108,487,474.19
  5. Step 5: Solve for x
    x = 108,487,474.19/13,631.00
  6. Step 6: Final answer
    x = 7,958.88

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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.