Home / 12,622.36-18,935.84-5,222.80

Finding the Fourth Proportional to 12,622.36, 18,935.84 and 5,222.80

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Solution

The fourth proportional to 12,622.36, 18,935.84 and 5,222.80 is: 7,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.36 : 18,935.84 = 5,222.80 : x
  2. Step 2: Convert to fraction form
    12,622.36/18,935.84 = 5,222.80/x
  3. Step 3: Cross multiply
    12,622.36x = 18,935.84 × 5,222.80
  4. Step 4: Simplify right side
    12,622.36x = 98,898,105.15
  5. Step 5: Solve for x
    x = 98,898,105.15/12,622.36
  6. Step 6: Final answer
    x = 7,835.15

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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.