Home / 19,806.30-29,712.78-7,326.36

Finding the Fourth Proportional to 19,806.30, 29,712.78 and 7,326.36

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Solution

The fourth proportional to 19,806.30, 29,712.78 and 7,326.36 is: 10,990.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,806.30 : 29,712.78 = 7,326.36 : x
  2. Step 2: Convert to fraction form
    19,806.30/29,712.78 = 7,326.36/x
  3. Step 3: Cross multiply
    19,806.30x = 29,712.78 × 7,326.36
  4. Step 4: Simplify right side
    19,806.30x = 217,686,522.88
  5. Step 5: Solve for x
    x = 217,686,522.88/19,806.30
  6. Step 6: Final answer
    x = 10,990.77

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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.