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Finding the Fourth Proportional to 19,900.89, 27,463.95 and 10,949.09

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Solution

The fourth proportional to 19,900.89, 27,463.95 and 10,949.09 is: 15,110.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.89 : 27,463.95 = 10,949.09 : x
  2. Step 2: Convert to fraction form
    19,900.89/27,463.95 = 10,949.09/x
  3. Step 3: Cross multiply
    19,900.89x = 27,463.95 × 10,949.09
  4. Step 4: Simplify right side
    19,900.89x = 300,705,122.99
  5. Step 5: Solve for x
    x = 300,705,122.99/19,900.89
  6. Step 6: Final answer
    x = 15,110.13

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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.