Home / 18,139.77-27,211.82-11,116.53

Finding the Fourth Proportional to 18,139.77, 27,211.82 and 11,116.53

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Solution

The fourth proportional to 18,139.77, 27,211.82 and 11,116.53 is: 16,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.77 : 27,211.82 = 11,116.53 : x
  2. Step 2: Convert to fraction form
    18,139.77/27,211.82 = 11,116.53/x
  3. Step 3: Cross multiply
    18,139.77x = 27,211.82 × 11,116.53
  4. Step 4: Simplify right side
    18,139.77x = 302,500,957.80
  5. Step 5: Solve for x
    x = 302,500,957.80/18,139.77
  6. Step 6: Final answer
    x = 16,676.12

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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.