Home / 12,639.74-18,944.24-8,943.04

Finding the Fourth Proportional to 12,639.74, 18,944.24 and 8,943.04

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Solution

The fourth proportional to 12,639.74, 18,944.24 and 8,943.04 is: 13,403.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.74 : 18,944.24 = 8,943.04 : x
  2. Step 2: Convert to fraction form
    12,639.74/18,944.24 = 8,943.04/x
  3. Step 3: Cross multiply
    12,639.74x = 18,944.24 × 8,943.04
  4. Step 4: Simplify right side
    12,639.74x = 169,419,096.09
  5. Step 5: Solve for x
    x = 169,419,096.09/12,639.74
  6. Step 6: Final answer
    x = 13,403.69

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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.