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Finding the Fourth Proportional to 19,593.80, 29,390.70 and 11,817.80

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Solution

The fourth proportional to 19,593.80, 29,390.70 and 11,817.80 is: 17,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,593.80 : 29,390.70 = 11,817.80 : x
  2. Step 2: Convert to fraction form
    19,593.80/29,390.70 = 11,817.80/x
  3. Step 3: Cross multiply
    19,593.80x = 29,390.70 × 11,817.80
  4. Step 4: Simplify right side
    19,593.80x = 347,333,414.46
  5. Step 5: Solve for x
    x = 347,333,414.46/19,593.80
  6. Step 6: Final answer
    x = 17,726.70

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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.