Home / 18,655.38-27,990.36-6,969.51

Finding the Fourth Proportional to 18,655.38, 27,990.36 and 6,969.51

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Solution

The fourth proportional to 18,655.38, 27,990.36 and 6,969.51 is: 10,456.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.38 : 27,990.36 = 6,969.51 : x
  2. Step 2: Convert to fraction form
    18,655.38/27,990.36 = 6,969.51/x
  3. Step 3: Cross multiply
    18,655.38x = 27,990.36 × 6,969.51
  4. Step 4: Simplify right side
    18,655.38x = 195,079,093.92
  5. Step 5: Solve for x
    x = 195,079,093.92/18,655.38
  6. Step 6: Final answer
    x = 10,456.99

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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.