Home / 20,813.52-31,182.48-12,029.88

Finding the Fourth Proportional to 20,813.52, 31,182.48 and 12,029.88

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Solution

The fourth proportional to 20,813.52, 31,182.48 and 12,029.88 is: 18,022.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.52 : 31,182.48 = 12,029.88 : x
  2. Step 2: Convert to fraction form
    20,813.52/31,182.48 = 12,029.88/x
  3. Step 3: Cross multiply
    20,813.52x = 31,182.48 × 12,029.88
  4. Step 4: Simplify right side
    20,813.52x = 375,121,492.50
  5. Step 5: Solve for x
    x = 375,121,492.50/20,813.52
  6. Step 6: Final answer
    x = 18,022.97

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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.