Home / 28,666.82-39,578.94-18,623.88

Finding the Fourth Proportional to 28,666.82, 39,578.94 and 18,623.88

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Solution

The fourth proportional to 28,666.82, 39,578.94 and 18,623.88 is: 25,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.82 : 39,578.94 = 18,623.88 : x
  2. Step 2: Convert to fraction form
    28,666.82/39,578.94 = 18,623.88/x
  3. Step 3: Cross multiply
    28,666.82x = 39,578.94 × 18,623.88
  4. Step 4: Simplify right side
    28,666.82x = 737,113,429.09
  5. Step 5: Solve for x
    x = 737,113,429.09/28,666.82
  6. Step 6: Final answer
    x = 25,713.12

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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.