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Finding the Fourth Proportional to 18,308.16, 27,450.32 and 12,049.20

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Solution

The fourth proportional to 18,308.16, 27,450.32 and 12,049.20 is: 18,065.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.16 : 27,450.32 = 12,049.20 : x
  2. Step 2: Convert to fraction form
    18,308.16/27,450.32 = 12,049.20/x
  3. Step 3: Cross multiply
    18,308.16x = 27,450.32 × 12,049.20
  4. Step 4: Simplify right side
    18,308.16x = 330,754,395.74
  5. Step 5: Solve for x
    x = 330,754,395.74/18,308.16
  6. Step 6: Final answer
    x = 18,065.96

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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.