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Finding the Fourth Proportional to 18,949.00, 28,443.21 and 13,957.01

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Solution

The fourth proportional to 18,949.00, 28,443.21 and 13,957.01 is: 20,950.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.00 : 28,443.21 = 13,957.01 : x
  2. Step 2: Convert to fraction form
    18,949.00/28,443.21 = 13,957.01/x
  3. Step 3: Cross multiply
    18,949.00x = 28,443.21 × 13,957.01
  4. Step 4: Simplify right side
    18,949.00x = 396,982,130.19
  5. Step 5: Solve for x
    x = 396,982,130.19/18,949.00
  6. Step 6: Final answer
    x = 20,950.03

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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.