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Finding the Fourth Proportional to 21,614.75, 32,423.94 and 6,819.69

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Solution

The fourth proportional to 21,614.75, 32,423.94 and 6,819.69 is: 10,230.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.75 : 32,423.94 = 6,819.69 : x
  2. Step 2: Convert to fraction form
    21,614.75/32,423.94 = 6,819.69/x
  3. Step 3: Cross multiply
    21,614.75x = 32,423.94 × 6,819.69
  4. Step 4: Simplify right side
    21,614.75x = 221,121,185.28
  5. Step 5: Solve for x
    x = 221,121,185.28/21,614.75
  6. Step 6: Final answer
    x = 10,230.11

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1.5x scale

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.