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Finding the Fourth Proportional to 19,668.72, 27,143.73 and 11,602.68

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Solution

The fourth proportional to 19,668.72, 27,143.73 and 11,602.68 is: 16,012.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.72 : 27,143.73 = 11,602.68 : x
  2. Step 2: Convert to fraction form
    19,668.72/27,143.73 = 11,602.68/x
  3. Step 3: Cross multiply
    19,668.72x = 27,143.73 × 11,602.68
  4. Step 4: Simplify right side
    19,668.72x = 314,940,013.20
  5. Step 5: Solve for x
    x = 314,940,013.20/19,668.72
  6. Step 6: Final answer
    x = 16,012.23

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1.5x scale

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.