Home / 18,420.12-27,630.24-11,026.80

Finding the Fourth Proportional to 18,420.12, 27,630.24 and 11,026.80

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Solution

The fourth proportional to 18,420.12, 27,630.24 and 11,026.80 is: 16,540.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.12 : 27,630.24 = 11,026.80 : x
  2. Step 2: Convert to fraction form
    18,420.12/27,630.24 = 11,026.80/x
  3. Step 3: Cross multiply
    18,420.12x = 27,630.24 × 11,026.80
  4. Step 4: Simplify right side
    18,420.12x = 304,673,130.43
  5. Step 5: Solve for x
    x = 304,673,130.43/18,420.12
  6. Step 6: Final answer
    x = 16,540.24

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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.