Home / 20,881.75-31,322.01-7,733.83

Finding the Fourth Proportional to 20,881.75, 31,322.01 and 7,733.83

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Solution

The fourth proportional to 20,881.75, 31,322.01 and 7,733.83 is: 11,600.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.75 : 31,322.01 = 7,733.83 : x
  2. Step 2: Convert to fraction form
    20,881.75/31,322.01 = 7,733.83/x
  3. Step 3: Cross multiply
    20,881.75x = 31,322.01 × 7,733.83
  4. Step 4: Simplify right side
    20,881.75x = 242,239,100.60
  5. Step 5: Solve for x
    x = 242,239,100.60/20,881.75
  6. Step 6: Final answer
    x = 11,600.52

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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.