Home / 12,928.27-19,354.13-7,982.00

Finding the Fourth Proportional to 12,928.27, 19,354.13 and 7,982.00

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Solution

The fourth proportional to 12,928.27, 19,354.13 and 7,982.00 is: 11,949.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.27 : 19,354.13 = 7,982.00 : x
  2. Step 2: Convert to fraction form
    12,928.27/19,354.13 = 7,982.00/x
  3. Step 3: Cross multiply
    12,928.27x = 19,354.13 × 7,982.00
  4. Step 4: Simplify right side
    12,928.27x = 154,484,704.07
  5. Step 5: Solve for x
    x = 154,484,704.07/12,928.27
  6. Step 6: Final answer
    x = 11,949.37

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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.