Home / 12,622.81-18,945.94-6,387.23

Finding the Fourth Proportional to 12,622.81, 18,945.94 and 6,387.23

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Solution

The fourth proportional to 12,622.81, 18,945.94 and 6,387.23 is: 9,586.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.81 : 18,945.94 = 6,387.23 : x
  2. Step 2: Convert to fraction form
    12,622.81/18,945.94 = 6,387.23/x
  3. Step 3: Cross multiply
    12,622.81x = 18,945.94 × 6,387.23
  4. Step 4: Simplify right side
    12,622.81x = 121,012,076.35
  5. Step 5: Solve for x
    x = 121,012,076.35/12,622.81
  6. Step 6: Final answer
    x = 9,586.78

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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.