Home / 19,972.92-27,568.94-12,899.20

Finding the Fourth Proportional to 19,972.92, 27,568.94 and 12,899.20

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Solution

The fourth proportional to 19,972.92, 27,568.94 and 12,899.20 is: 17,804.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.92 : 27,568.94 = 12,899.20 : x
  2. Step 2: Convert to fraction form
    19,972.92/27,568.94 = 12,899.20/x
  3. Step 3: Cross multiply
    19,972.92x = 27,568.94 × 12,899.20
  4. Step 4: Simplify right side
    19,972.92x = 355,617,270.85
  5. Step 5: Solve for x
    x = 355,617,270.85/19,972.92
  6. Step 6: Final answer
    x = 17,804.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.