Home / 31,714.11-43,745.67-20,398.35

Finding the Fourth Proportional to 31,714.11, 43,745.67 and 20,398.35

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Solution

The fourth proportional to 31,714.11, 43,745.67 and 20,398.35 is: 28,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,714.11 : 43,745.67 = 20,398.35 : x
  2. Step 2: Convert to fraction form
    31,714.11/43,745.67 = 20,398.35/x
  3. Step 3: Cross multiply
    31,714.11x = 43,745.67 × 20,398.35
  4. Step 4: Simplify right side
    31,714.11x = 892,339,487.64
  5. Step 5: Solve for x
    x = 892,339,487.64/31,714.11
  6. Step 6: Final answer
    x = 28,136.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.