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Finding the Fourth Proportional to 19,703.96, 29,555.94 and 13,142.96

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Solution

The fourth proportional to 19,703.96, 29,555.94 and 13,142.96 is: 19,714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.96 : 29,555.94 = 13,142.96 : x
  2. Step 2: Convert to fraction form
    19,703.96/29,555.94 = 13,142.96/x
  3. Step 3: Cross multiply
    19,703.96x = 29,555.94 × 13,142.96
  4. Step 4: Simplify right side
    19,703.96x = 388,452,537.18
  5. Step 5: Solve for x
    x = 388,452,537.18/19,703.96
  6. Step 6: Final answer
    x = 19,714.44

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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.