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Finding the Fourth Proportional to 14,327.80, 21,491.70 and 12,213.70

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Solution

The fourth proportional to 14,327.80, 21,491.70 and 12,213.70 is: 18,320.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,327.80 : 21,491.70 = 12,213.70 : x
  2. Step 2: Convert to fraction form
    14,327.80/21,491.70 = 12,213.70/x
  3. Step 3: Cross multiply
    14,327.80x = 21,491.70 × 12,213.70
  4. Step 4: Simplify right side
    14,327.80x = 262,493,176.29
  5. Step 5: Solve for x
    x = 262,493,176.29/14,327.80
  6. Step 6: Final answer
    x = 18,320.55

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Similar ratio
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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.