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Finding the Fourth Proportional to 27,172.80, 40,672.80 and 19,396.80

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Solution

The fourth proportional to 27,172.80, 40,672.80 and 19,396.80 is: 29,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,172.80 : 40,672.80 = 19,396.80 : x
  2. Step 2: Convert to fraction form
    27,172.80/40,672.80 = 19,396.80/x
  3. Step 3: Cross multiply
    27,172.80x = 40,672.80 × 19,396.80
  4. Step 4: Simplify right side
    27,172.80x = 788,922,167.04
  5. Step 5: Solve for x
    x = 788,922,167.04/27,172.80
  6. Step 6: Final answer
    x = 29,033.52

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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.