Home / 22,231.12-30,679.80-12,672.51

Finding the Fourth Proportional to 22,231.12, 30,679.80 and 12,672.51

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Solution

The fourth proportional to 22,231.12, 30,679.80 and 12,672.51 is: 17,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,231.12 : 30,679.80 = 12,672.51 : x
  2. Step 2: Convert to fraction form
    22,231.12/30,679.80 = 12,672.51/x
  3. Step 3: Cross multiply
    22,231.12x = 30,679.80 × 12,672.51
  4. Step 4: Simplify right side
    22,231.12x = 388,790,072.30
  5. Step 5: Solve for x
    x = 388,790,072.30/22,231.12
  6. Step 6: Final answer
    x = 17,488.55

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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.