Home / 21,999.91-30,361.49-12,568.27

Finding the Fourth Proportional to 21,999.91, 30,361.49 and 12,568.27

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Solution

The fourth proportional to 21,999.91, 30,361.49 and 12,568.27 is: 17,345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.91 : 30,361.49 = 12,568.27 : x
  2. Step 2: Convert to fraction form
    21,999.91/30,361.49 = 12,568.27/x
  3. Step 3: Cross multiply
    21,999.91x = 30,361.49 × 12,568.27
  4. Step 4: Simplify right side
    21,999.91x = 381,591,341.08
  5. Step 5: Solve for x
    x = 381,591,341.08/21,999.91
  6. Step 6: Final answer
    x = 17,345.13

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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.