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Finding the Fourth Proportional to 18,458.76, 27,648.90 and 17,136.84

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Solution

The fourth proportional to 18,458.76, 27,648.90 and 17,136.84 is: 25,668.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.76 : 27,648.90 = 17,136.84 : x
  2. Step 2: Convert to fraction form
    18,458.76/27,648.90 = 17,136.84/x
  3. Step 3: Cross multiply
    18,458.76x = 27,648.90 × 17,136.84
  4. Step 4: Simplify right side
    18,458.76x = 473,814,775.48
  5. Step 5: Solve for x
    x = 473,814,775.48/18,458.76
  6. Step 6: Final answer
    x = 25,668.83

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1.5x scale

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.