Home / 18,694.49-25,783.81-11,980.74

Finding the Fourth Proportional to 18,694.49, 25,783.81 and 11,980.74

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Solution

The fourth proportional to 18,694.49, 25,783.81 and 11,980.74 is: 16,524.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.49 : 25,783.81 = 11,980.74 : x
  2. Step 2: Convert to fraction form
    18,694.49/25,783.81 = 11,980.74/x
  3. Step 3: Cross multiply
    18,694.49x = 25,783.81 × 11,980.74
  4. Step 4: Simplify right side
    18,694.49x = 308,909,093.87
  5. Step 5: Solve for x
    x = 308,909,093.87/18,694.49
  6. Step 6: Final answer
    x = 16,524.08

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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.