Home / 18,243.54-25,138.89-12,580.02

Finding the Fourth Proportional to 18,243.54, 25,138.89 and 12,580.02

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Solution

The fourth proportional to 18,243.54, 25,138.89 and 12,580.02 is: 17,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.54 : 25,138.89 = 12,580.02 : x
  2. Step 2: Convert to fraction form
    18,243.54/25,138.89 = 12,580.02/x
  3. Step 3: Cross multiply
    18,243.54x = 25,138.89 × 12,580.02
  4. Step 4: Simplify right side
    18,243.54x = 316,247,738.98
  5. Step 5: Solve for x
    x = 316,247,738.98/18,243.54
  6. Step 6: Final answer
    x = 17,334.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.