Home / 20,813.82-31,225.79-11,449.41

Finding the Fourth Proportional to 20,813.82, 31,225.79 and 11,449.41

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Solution

The fourth proportional to 20,813.82, 31,225.79 and 11,449.41 is: 17,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.82 : 31,225.79 = 11,449.41 : x
  2. Step 2: Convert to fraction form
    20,813.82/31,225.79 = 11,449.41/x
  3. Step 3: Cross multiply
    20,813.82x = 31,225.79 × 11,449.41
  4. Step 4: Simplify right side
    20,813.82x = 357,516,872.28
  5. Step 5: Solve for x
    x = 357,516,872.28/20,813.82
  6. Step 6: Final answer
    x = 17,176.90

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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.