Home / 18,135.39-27,198.96-6,888.40

Finding the Fourth Proportional to 18,135.39, 27,198.96 and 6,888.40

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Solution

The fourth proportional to 18,135.39, 27,198.96 and 6,888.40 is: 10,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.39 : 27,198.96 = 6,888.40 : x
  2. Step 2: Convert to fraction form
    18,135.39/27,198.96 = 6,888.40/x
  3. Step 3: Cross multiply
    18,135.39x = 27,198.96 × 6,888.40
  4. Step 4: Simplify right side
    18,135.39x = 187,357,222.24
  5. Step 5: Solve for x
    x = 187,357,222.24/18,135.39
  6. Step 6: Final answer
    x = 10,331.03

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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.