Home / 21,729.62-32,609.02-7,689.58

Finding the Fourth Proportional to 21,729.62, 32,609.02 and 7,689.58

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Solution

The fourth proportional to 21,729.62, 32,609.02 and 7,689.58 is: 11,539.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.62 : 32,609.02 = 7,689.58 : x
  2. Step 2: Convert to fraction form
    21,729.62/32,609.02 = 7,689.58/x
  3. Step 3: Cross multiply
    21,729.62x = 32,609.02 × 7,689.58
  4. Step 4: Simplify right side
    21,729.62x = 250,749,668.01
  5. Step 5: Solve for x
    x = 250,749,668.01/21,729.62
  6. Step 6: Final answer
    x = 11,539.53

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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.