Home / 20,929.20-31,410.27-18,468.96

Finding the Fourth Proportional to 20,929.20, 31,410.27 and 18,468.96

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Solution

The fourth proportional to 20,929.20, 31,410.27 and 18,468.96 is: 27,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.20 : 31,410.27 = 18,468.96 : x
  2. Step 2: Convert to fraction form
    20,929.20/31,410.27 = 18,468.96/x
  3. Step 3: Cross multiply
    20,929.20x = 31,410.27 × 18,468.96
  4. Step 4: Simplify right side
    20,929.20x = 580,115,020.22
  5. Step 5: Solve for x
    x = 580,115,020.22/20,929.20
  6. Step 6: Final answer
    x = 27,717.97

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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.