Home / 20,881.63-31,321.83-7,733.71

Finding the Fourth Proportional to 20,881.63, 31,321.83 and 7,733.71

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Solution

The fourth proportional to 20,881.63, 31,321.83 and 7,733.71 is: 11,600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.63 : 31,321.83 = 7,733.71 : x
  2. Step 2: Convert to fraction form
    20,881.63/31,321.83 = 7,733.71/x
  3. Step 3: Cross multiply
    20,881.63x = 31,321.83 × 7,733.71
  4. Step 4: Simplify right side
    20,881.63x = 242,233,793.28
  5. Step 5: Solve for x
    x = 242,233,793.28/20,881.63
  6. Step 6: Final answer
    x = 11,600.33

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1.5x scale

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.