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Finding the Fourth Proportional to 14,571.70, 21,857.55 and 8,329.30

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Solution

The fourth proportional to 14,571.70, 21,857.55 and 8,329.30 is: 12,493.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,571.70 : 21,857.55 = 8,329.30 : x
  2. Step 2: Convert to fraction form
    14,571.70/21,857.55 = 8,329.30/x
  3. Step 3: Cross multiply
    14,571.70x = 21,857.55 × 8,329.30
  4. Step 4: Simplify right side
    14,571.70x = 182,058,091.22
  5. Step 5: Solve for x
    x = 182,058,091.22/14,571.70
  6. Step 6: Final answer
    x = 12,493.95

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Double scale
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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.