Home / 22,551.44-31,120.68-12,479.84

Finding the Fourth Proportional to 22,551.44, 31,120.68 and 12,479.84

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Solution

The fourth proportional to 22,551.44, 31,120.68 and 12,479.84 is: 17,222.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.44 : 31,120.68 = 12,479.84 : x
  2. Step 2: Convert to fraction form
    22,551.44/31,120.68 = 12,479.84/x
  3. Step 3: Cross multiply
    22,551.44x = 31,120.68 × 12,479.84
  4. Step 4: Simplify right side
    22,551.44x = 388,381,107.09
  5. Step 5: Solve for x
    x = 388,381,107.09/22,551.44
  6. Step 6: Final answer
    x = 17,222.01

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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.