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Finding the Fourth Proportional to 30,270.78, 41,772.78 and 16,841.52

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Solution

The fourth proportional to 30,270.78, 41,772.78 and 16,841.52 is: 23,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,270.78 : 41,772.78 = 16,841.52 : x
  2. Step 2: Convert to fraction form
    30,270.78/41,772.78 = 16,841.52/x
  3. Step 3: Cross multiply
    30,270.78x = 41,772.78 × 16,841.52
  4. Step 4: Simplify right side
    30,270.78x = 703,517,109.83
  5. Step 5: Solve for x
    x = 703,517,109.83/30,270.78
  6. Step 6: Final answer
    x = 23,240.80

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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.