Home / 21,640.72-32,435.04-14,147.80

Finding the Fourth Proportional to 21,640.72, 32,435.04 and 14,147.80

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Solution

The fourth proportional to 21,640.72, 32,435.04 and 14,147.80 is: 21,204.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.72 : 32,435.04 = 14,147.80 : x
  2. Step 2: Convert to fraction form
    21,640.72/32,435.04 = 14,147.80/x
  3. Step 3: Cross multiply
    21,640.72x = 32,435.04 × 14,147.80
  4. Step 4: Simplify right side
    21,640.72x = 458,884,458.91
  5. Step 5: Solve for x
    x = 458,884,458.91/21,640.72
  6. Step 6: Final answer
    x = 21,204.68

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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.