Home / 18,145.18-27,228.68-7,756.94

Finding the Fourth Proportional to 18,145.18, 27,228.68 and 7,756.94

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Solution

The fourth proportional to 18,145.18, 27,228.68 and 7,756.94 is: 11,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.18 : 27,228.68 = 7,756.94 : x
  2. Step 2: Convert to fraction form
    18,145.18/27,228.68 = 7,756.94/x
  3. Step 3: Cross multiply
    18,145.18x = 27,228.68 × 7,756.94
  4. Step 4: Simplify right side
    18,145.18x = 211,211,237.04
  5. Step 5: Solve for x
    x = 211,211,237.04/18,145.18
  6. Step 6: Final answer
    x = 11,640.07

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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.