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Finding the Fourth Proportional to 21,668.56, 32,504.04 and 6,876.40

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Solution

The fourth proportional to 21,668.56, 32,504.04 and 6,876.40 is: 10,314.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.56 : 32,504.04 = 6,876.40 : x
  2. Step 2: Convert to fraction form
    21,668.56/32,504.04 = 6,876.40/x
  3. Step 3: Cross multiply
    21,668.56x = 32,504.04 × 6,876.40
  4. Step 4: Simplify right side
    21,668.56x = 223,510,780.66
  5. Step 5: Solve for x
    x = 223,510,780.66/21,668.56
  6. Step 6: Final answer
    x = 10,314.98

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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.