Home / 18,015.48-26,982.18-12,443.49

Finding the Fourth Proportional to 18,015.48, 26,982.18 and 12,443.49

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Solution

The fourth proportional to 18,015.48, 26,982.18 and 12,443.49 is: 18,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.48 : 26,982.18 = 12,443.49 : x
  2. Step 2: Convert to fraction form
    18,015.48/26,982.18 = 12,443.49/x
  3. Step 3: Cross multiply
    18,015.48x = 26,982.18 × 12,443.49
  4. Step 4: Simplify right side
    18,015.48x = 335,752,487.01
  5. Step 5: Solve for x
    x = 335,752,487.01/18,015.48
  6. Step 6: Final answer
    x = 18,636.89

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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.