Home / 20,733.36-31,106.52-15,808.56

Finding the Fourth Proportional to 20,733.36, 31,106.52 and 15,808.56

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Solution

The fourth proportional to 20,733.36, 31,106.52 and 15,808.56 is: 23,717.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.36 : 31,106.52 = 15,808.56 : x
  2. Step 2: Convert to fraction form
    20,733.36/31,106.52 = 15,808.56/x
  3. Step 3: Cross multiply
    20,733.36x = 31,106.52 × 15,808.56
  4. Step 4: Simplify right side
    20,733.36x = 491,749,287.81
  5. Step 5: Solve for x
    x = 491,749,287.81/20,733.36
  6. Step 6: Final answer
    x = 23,717.78

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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.