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Finding the Fourth Proportional to 19,996.88, 27,580.78 and 17,730.88

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Solution

The fourth proportional to 19,996.88, 27,580.78 and 17,730.88 is: 24,455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,996.88 : 27,580.78 = 17,730.88 : x
  2. Step 2: Convert to fraction form
    19,996.88/27,580.78 = 17,730.88/x
  3. Step 3: Cross multiply
    19,996.88x = 27,580.78 × 17,730.88
  4. Step 4: Simplify right side
    19,996.88x = 489,031,500.49
  5. Step 5: Solve for x
    x = 489,031,500.49/19,996.88
  6. Step 6: Final answer
    x = 24,455.39

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.