Home / 15,681.62-21,668.67-11,664.65

Finding the Fourth Proportional to 15,681.62, 21,668.67 and 11,664.65

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Solution

The fourth proportional to 15,681.62, 21,668.67 and 11,664.65 is: 16,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.62 : 21,668.67 = 11,664.65 : x
  2. Step 2: Convert to fraction form
    15,681.62/21,668.67 = 11,664.65/x
  3. Step 3: Cross multiply
    15,681.62x = 21,668.67 × 11,664.65
  4. Step 4: Simplify right side
    15,681.62x = 252,757,343.17
  5. Step 5: Solve for x
    x = 252,757,343.17/15,681.62
  6. Step 6: Final answer
    x = 16,118.07

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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.