Home / 20,208.36-30,318.54-10,354.56

Finding the Fourth Proportional to 20,208.36, 30,318.54 and 10,354.56

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Solution

The fourth proportional to 20,208.36, 30,318.54 and 10,354.56 is: 15,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.36 : 30,318.54 = 10,354.56 : x
  2. Step 2: Convert to fraction form
    20,208.36/30,318.54 = 10,354.56/x
  3. Step 3: Cross multiply
    20,208.36x = 30,318.54 × 10,354.56
  4. Step 4: Simplify right side
    20,208.36x = 313,935,141.54
  5. Step 5: Solve for x
    x = 313,935,141.54/20,208.36
  6. Step 6: Final answer
    x = 15,534.91

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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.