Home / 13,239.65-19,864.04-6,660.43

Finding the Fourth Proportional to 13,239.65, 19,864.04 and 6,660.43

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Solution

The fourth proportional to 13,239.65, 19,864.04 and 6,660.43 is: 9,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.65 : 19,864.04 = 6,660.43 : x
  2. Step 2: Convert to fraction form
    13,239.65/19,864.04 = 6,660.43/x
  3. Step 3: Cross multiply
    13,239.65x = 19,864.04 × 6,660.43
  4. Step 4: Simplify right side
    13,239.65x = 132,302,964.97
  5. Step 5: Solve for x
    x = 132,302,964.97/13,239.65
  6. Step 6: Final answer
    x = 9,992.93

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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.