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Finding the Fourth Proportional to 18,270.20, 27,416.10 and 12,048.20

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Solution

The fourth proportional to 18,270.20, 27,416.10 and 12,048.20 is: 18,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.20 : 27,416.10 = 12,048.20 : x
  2. Step 2: Convert to fraction form
    18,270.20/27,416.10 = 12,048.20/x
  3. Step 3: Cross multiply
    18,270.20x = 27,416.10 × 12,048.20
  4. Step 4: Simplify right side
    18,270.20x = 330,314,656.02
  5. Step 5: Solve for x
    x = 330,314,656.02/18,270.20
  6. Step 6: Final answer
    x = 18,079.42

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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.