Home / 21,806.90-32,687.91-8,668.58

Finding the Fourth Proportional to 21,806.90, 32,687.91 and 8,668.58

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Solution

The fourth proportional to 21,806.90, 32,687.91 and 8,668.58 is: 12,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.90 : 32,687.91 = 8,668.58 : x
  2. Step 2: Convert to fraction form
    21,806.90/32,687.91 = 8,668.58/x
  3. Step 3: Cross multiply
    21,806.90x = 32,687.91 × 8,668.58
  4. Step 4: Simplify right side
    21,806.90x = 283,357,762.87
  5. Step 5: Solve for x
    x = 283,357,762.87/21,806.90
  6. Step 6: Final answer
    x = 12,993.95

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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.