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Finding the Fourth Proportional to 18,310.80, 27,466.20 and 12,673.20

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Solution

The fourth proportional to 18,310.80, 27,466.20 and 12,673.20 is: 19,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.80 : 27,466.20 = 12,673.20 : x
  2. Step 2: Convert to fraction form
    18,310.80/27,466.20 = 12,673.20/x
  3. Step 3: Cross multiply
    18,310.80x = 27,466.20 × 12,673.20
  4. Step 4: Simplify right side
    18,310.80x = 348,084,645.84
  5. Step 5: Solve for x
    x = 348,084,645.84/18,310.80
  6. Step 6: Final answer
    x = 19,009.80

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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.