Home / 21,511.30-32,287.48-13,207.54

Finding the Fourth Proportional to 21,511.30, 32,287.48 and 13,207.54

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Solution

The fourth proportional to 21,511.30, 32,287.48 and 13,207.54 is: 19,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.30 : 32,287.48 = 13,207.54 : x
  2. Step 2: Convert to fraction form
    21,511.30/32,287.48 = 13,207.54/x
  3. Step 3: Cross multiply
    21,511.30x = 32,287.48 × 13,207.54
  4. Step 4: Simplify right side
    21,511.30x = 426,438,183.60
  5. Step 5: Solve for x
    x = 426,438,183.60/21,511.30
  6. Step 6: Final answer
    x = 19,823.92

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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.