Home / 21,194.28-31,785.36-8,544

Finding the Fourth Proportional to 21,194.28, 31,785.36 and 8,544

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Solution

The fourth proportional to 21,194.28, 31,785.36 and 8,544 is: 12,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,194.28 : 31,785.36 = 8,544 : x
  2. Step 2: Convert to fraction form
    21,194.28/31,785.36 = 8,544/x
  3. Step 3: Cross multiply
    21,194.28x = 31,785.36 × 8,544
  4. Step 4: Simplify right side
    21,194.28x = 271,574,115.84
  5. Step 5: Solve for x
    x = 271,574,115.84/21,194.28
  6. Step 6: Final answer
    x = 12,813.56

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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.