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Finding the Fourth Proportional to 39,573.48, 54,611.39 and 21,668.48

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Solution

The fourth proportional to 39,573.48, 54,611.39 and 21,668.48 is: 29,902.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,573.48 : 54,611.39 = 21,668.48 : x
  2. Step 2: Convert to fraction form
    39,573.48/54,611.39 = 21,668.48/x
  3. Step 3: Cross multiply
    39,573.48x = 54,611.39 × 21,668.48
  4. Step 4: Simplify right side
    39,573.48x = 1,183,345,811.99
  5. Step 5: Solve for x
    x = 1,183,345,811.99/39,573.48
  6. Step 6: Final answer
    x = 29,902.50

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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.