Home / 18,079.29-27,116.37-6,991.20

Finding the Fourth Proportional to 18,079.29, 27,116.37 and 6,991.20

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Solution

The fourth proportional to 18,079.29, 27,116.37 and 6,991.20 is: 10,485.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.29 : 27,116.37 = 6,991.20 : x
  2. Step 2: Convert to fraction form
    18,079.29/27,116.37 = 6,991.20/x
  3. Step 3: Cross multiply
    18,079.29x = 27,116.37 × 6,991.20
  4. Step 4: Simplify right side
    18,079.29x = 189,575,965.94
  5. Step 5: Solve for x
    x = 189,575,965.94/18,079.29
  6. Step 6: Final answer
    x = 10,485.81

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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.