Home / 18,315.50-27,453.07-11,982.77

Finding the Fourth Proportional to 18,315.50, 27,453.07 and 11,982.77

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Solution

The fourth proportional to 18,315.50, 27,453.07 and 11,982.77 is: 17,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.50 : 27,453.07 = 11,982.77 : x
  2. Step 2: Convert to fraction form
    18,315.50/27,453.07 = 11,982.77/x
  3. Step 3: Cross multiply
    18,315.50x = 27,453.07 × 11,982.77
  4. Step 4: Simplify right side
    18,315.50x = 328,963,855.74
  5. Step 5: Solve for x
    x = 328,963,855.74/18,315.50
  6. Step 6: Final answer
    x = 17,960.95

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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.