Home / 20,962.72-31,435.62-8,480.44

Finding the Fourth Proportional to 20,962.72, 31,435.62 and 8,480.44

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Solution

The fourth proportional to 20,962.72, 31,435.62 and 8,480.44 is: 12,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.72 : 31,435.62 = 8,480.44 : x
  2. Step 2: Convert to fraction form
    20,962.72/31,435.62 = 8,480.44/x
  3. Step 3: Cross multiply
    20,962.72x = 31,435.62 × 8,480.44
  4. Step 4: Simplify right side
    20,962.72x = 266,587,889.27
  5. Step 5: Solve for x
    x = 266,587,889.27/20,962.72
  6. Step 6: Final answer
    x = 12,717.24

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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.