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Finding the Fourth Proportional to 10,668.65, 16,005.54 and 4,005.22

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Solution

The fourth proportional to 10,668.65, 16,005.54 and 4,005.22 is: 6,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,668.65 : 16,005.54 = 4,005.22 : x
  2. Step 2: Convert to fraction form
    10,668.65/16,005.54 = 4,005.22/x
  3. Step 3: Cross multiply
    10,668.65x = 16,005.54 × 4,005.22
  4. Step 4: Simplify right side
    10,668.65x = 64,105,628.89
  5. Step 5: Solve for x
    x = 64,105,628.89/10,668.65
  6. Step 6: Final answer
    x = 6,008.79

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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.