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Finding the Fourth Proportional to 14,128.70, 21,193.04 and 5,813.24

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Solution

The fourth proportional to 14,128.70, 21,193.04 and 5,813.24 is: 8,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.70 : 21,193.04 = 5,813.24 : x
  2. Step 2: Convert to fraction form
    14,128.70/21,193.04 = 5,813.24/x
  3. Step 3: Cross multiply
    14,128.70x = 21,193.04 × 5,813.24
  4. Step 4: Simplify right side
    14,128.70x = 123,200,092.82
  5. Step 5: Solve for x
    x = 123,200,092.82/14,128.70
  6. Step 6: Final answer
    x = 8,719.85

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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.