Home / 12,263.45-18,395.07-8,121.99

Finding the Fourth Proportional to 12,263.45, 18,395.07 and 8,121.99

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Solution

The fourth proportional to 12,263.45, 18,395.07 and 8,121.99 is: 12,182.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,263.45 : 18,395.07 = 8,121.99 : x
  2. Step 2: Convert to fraction form
    12,263.45/18,395.07 = 8,121.99/x
  3. Step 3: Cross multiply
    12,263.45x = 18,395.07 × 8,121.99
  4. Step 4: Simplify right side
    12,263.45x = 149,404,574.59
  5. Step 5: Solve for x
    x = 149,404,574.59/12,263.45
  6. Step 6: Final answer
    x = 12,182.92

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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.