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Finding the Fourth Proportional to 19,668.92, 27,153.15 and 13,329

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Solution

The fourth proportional to 19,668.92, 27,153.15 and 13,329 is: 18,400.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.92 : 27,153.15 = 13,329 : x
  2. Step 2: Convert to fraction form
    19,668.92/27,153.15 = 13,329/x
  3. Step 3: Cross multiply
    19,668.92x = 27,153.15 × 13,329
  4. Step 4: Simplify right side
    19,668.92x = 361,924,386.33
  5. Step 5: Solve for x
    x = 361,924,386.33/19,668.92
  6. Step 6: Final answer
    x = 18,400.83

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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.