Home / 18,219.09-27,324.09-12,938.70

Finding the Fourth Proportional to 18,219.09, 27,324.09 and 12,938.70

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Solution

The fourth proportional to 18,219.09, 27,324.09 and 12,938.70 is: 19,404.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.09 : 27,324.09 = 12,938.70 : x
  2. Step 2: Convert to fraction form
    18,219.09/27,324.09 = 12,938.70/x
  3. Step 3: Cross multiply
    18,219.09x = 27,324.09 × 12,938.70
  4. Step 4: Simplify right side
    18,219.09x = 353,538,203.28
  5. Step 5: Solve for x
    x = 353,538,203.28/18,219.09
  6. Step 6: Final answer
    x = 19,404.82

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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.